Druck UPS-III Loop Calibrator Instruction Manual
- June 4, 2024
- Druck
Table of Contents
Druck UPS-III Loop Calibrator
Introduction
The Druck UPS-III Intrinsically Safe Loop Calibrator can supply power (source mode) and produce readings (measure mode) to perform field calibrations on 2-wire devices. The set-up menu enables the user to “source” or “measure” in either voltage or current and to perform continuity tests. These instructions detail the requirements and operation of the UPS-III Intrinsically Safe Loop Calibrator in a hazardous area. Read the whole publication before starting.
Safety
The UPS-III has been designed to be safe when operated using the procedures
detailed in this manual. Do not use this equipment for any other purpose than
that stated, the protection provided by the equipment may be impaired.
Before installing and using the UPS-III, read and understand all the related
data. This includes: all local safety procedures and installation standards,
and this document.
Before starting an operation or procedure, use only approved engineers who
have the necessary skills (if necessary, with qualifications from an approved
training establishment). Follow good engineering practice at all times.
Repair
Do not do repairs to this equipment. Return the equipment to the manufacturer or an approved service agent.
Symbols
| Symbol | Description |
|---|---|
| This equipment meets the requirements of all relevant European safety |
directives. The equipment carries the CE mark.
| This symbol, on the equipment, indicates a warning and that the user should
refer to the user manual.
Ce symbole, sur l’instrument, indique que l’utilisateur doit consulter le
manuel d’utilisation. Ce symbole, dans le manuel, indique une situation
dangereuse.
| Do not dispose of this product as household waste. Use an approved
organization that collects and/or recycles waste electrical and electronic
equipment. For more information, contact one of these:
– Our customer service department: Druck.com/essential
– Your local government office.
Power Supply
The power supply for this loop calibrator can be the internal nonrechargeable batteries or an external universal power supply unit, Druck accessory IOPSU-1.
Batteries
CAUTION Do not mix cell types. Do not mix old and new cells.
Remove cells from the unit when placed in storage for an extended period of
time. If a cell has leaked return the unit to an approved Druck Service
Centre.
Use only 4 x AA LR6 manganese alkaline primary cells
Guide to Supply and Input/Output
Table 1: Key to Entity Parameter Table Conditions
| Condition | Description |
|---|
❶&❷
| Current measurement between mA and COM with external 24V. This mode of operation inserts the apparatus in the current loop by breaking into the circuit and connecting mA (positive) and COM (negative) into the circuit.
❸
| Current measurement between mA (24V) and mA with internal 24V. Terminal mA
(24V) provides the source of power to supply remote sensor. Special condition
for safe use – remote sensor MUST be isolated from all other sources of power.
❹| Voltage measurement between V and COM.
❺| Continuity measurement between V and COM. Special condition for safe use –
remote sensor MUST be isolated from all other sources of power.
❻
| Current generation between mA and COM with external 24V. This mode of operation inserts the apparatus in the current loop by breaking into the circuit and connecting mA (positive) and COM (negative) into the circuit.
❼
| Current generation between mA (24V) and mA with internal 24V. Terminal mA (24V) provides the source of power to supply the remote sensor. Special condition for safe use – remote sensor MUST be isolated from all other sources of power.
Operation
Keys
The key switches the loop calibrator on and off. Press and hold for 2 seconds.
The key changes the measure or source operating mode. Pressing the keys makes
menu selections, sets numerical values and controls step and ramp functions
(up/down).
The select advanced functions shown on the bottom of the display. When no key
is pressed for 10 minutes, the loop calibrator times out and switches off.
Todisable this automatic time out, select Aut power down in the set-up menu.
Operating Modes
Pressing switches the instrument on and the display shows the start-up
sequence. Pressing , at this time, the display shows the information screen:
Pressing , at this time, the display shows the set-up screen:
The calibrator can be used in two modes measure or source.
Measure Mode
The display shows the measured value; depending on the settings made in set-up and advanced settings:
When measuring current pressing enables linear or flow, pressing enables mA or % (value of 4 to 20 mA or 0 to 20 mA).
When measuring voltage pressing changes the resolution between 0.00 V and 0.000 V.
To measure continuity the displays shows an open or closed switch symbol with an audible signal on switch closure. Connect the calibrator to the device to be tested:
Measure mA ❶
Press the mode key and select [Measure mA]. An external power supply
supplies a maximum of 60 V for the loop. The calibrator measures the current
of the loop.
Measure mA ❷
Closed loop current measurement from transmitter test terminal.
Measure mA with 24V ❸
Press mode key and select [Measure mA and 24V]. The calibrator supplies 24 V
(maximum) for the loop, maximum 24 mA.
Measure Volts ❹
Press mode key and select [Measure Volts], measure range 60 V, maximum
impedance 1 Mohm.
Continuity Test ❺
Press mode key and select [Continuity Test]. Pressing switches the audible
signal on/off.
Source Mode
The display shows the source value in mA or % value of 4 to 20 mA or 0 to 20 mA, linear or flow depending on the settings made in set-up and advanced settings.
Source mA ❻
Press mode key and select [Source mA]. The calibrator supplies maximum output
of: 24 mA; Vmax = 60 V; receiver inputRmax = 1 kΩ.
Source mA with 24V ❼
Press mode key and select [Source mA and 24V]. The calibrator supplies
loop power of: 24 V and 24 mA.
Advanced Options in a Source Mode
Press the key and select mA Source or mA Source & 24V.
Use and (Enter) to select the function.
Press the key (Advanced) and the display shows:
- ‘Linear’ simulates linear transmitters.
- ‘Flow’ simulates flow transmitters.
- ‘Valve’ simulates valve control signals.
Use and (Enter) to select the Advanced option:
Table 2: Advanced Options
| Option | Description |
|---|---|
| Step | 25% steps for linear and flow – fixed values for valve. |
| Auto-step | The same as step with a timed step interval. |
| Span Check | Step between 4 (or 0) mA and 20 mA. |
| Ramp | Automatic ramp between 4 (or 0) mA and 20 mA. |
Note: Ramp function not available for valve selection.
Use to quit. The display returns to the selected source mode
with the advanced setting available.
Example Operation
Press the key to switch the advanced setting on and off:
e.g. on or off
Press or to:
a. step the output up or down.
b. step the span check maximum or minimum.
c. start the “ramp”.
Press then to start:
a. continuous auto-step.
or
b. continuous ramp cycle.
Hart® Application
This application allows mA measure and source modes to be used through the
Hart® communicator.
- Hart® communicator.
- UPS-III menu selectable 220 Ω loop resistor
Maintenance
- Return the loop calibrator to an authorized repair center for any repairs, it cannot be repaired on-site.
- To keep the loop calibrator accurate a calibration check should be carried out once per year.
Cleaning
- Clean the loop calibrator case with a moist, lint-free cloth and weak detergent.
Battery Replacement
This symbol indicates that the batteries are low, replace observing polarity shown below.
Unscrew and remove the securing screw from the battery panel. Replace the
batteries, check the polarity of the batteries. Refit and secure the battery
panel.
Remove batteries from the loop calibrator immediately when discharged and
before storage.
Dispose of batteries in accordance with local regulations and battery
manufacturers’ instructions.
When storing and transporting batteries make sure they cannot be short
circuited.
Calibration
The instrument is supplied by the manufacturer, complete with calibration
certificate(s).
A calibration period of 12 months is recommended. The actual calibration
interval depends on instrument usage and the total measurement uncertainty
acceptable for the specified application.
The UPS-III is a very precise measuring instrument and the test equipment and conditions of test must be suitable for the type of work. The calibration check and calibration adjustment should be carried out in a controlled environment by a calibration technician*
The manufacturer offers a comprehensive and, if required, UKAS accredited calibration service.
Calibration Equipment
The following tables give the accuracy requirements for the calibration
equipment and the UPS-III.
Calibration requires a stable temperature of 21° ± 1°C (70° ± 2°F).
UPS-III Measure Mode
Table 3: mA Measure
| Applied mA | Permitted UPS-III Error (mA) | Calibrator Error (mA) |
|---|---|---|
| 0 | 0.002 | 0 |
| 4 | 0.002 | 0.00014 |
| 12 | 0.002 | 0.00030 |
| 20 | 0.002 | 0.00046 |
Table 4: V Measure
| Applied V | Permitted UPS-III Error (mV) | Calibrator Error (mV) |
|---|---|---|
| 0 | 0.004 | 0.00040 |
| 20 | 0.004 | 0.00014 |
| 40 | 0.005 | 0.00064 |
| 50 | 0.005 | 0.00070 |
A calibration technician must have the necessary technical knowledge, documentation, special test equipment and tools to carry out the calibration work on this equipment.
UPS-III Source Mode
Table 5: mA Source
| Applied mA | Permitted UPS-III Error (mA) | Calibrator Error (mA) |
|---|---|---|
| 0 | 0.002 | 0 |
| 4 | 0.002 | 0.00012 |
| 12 | 0.002 | 0.00011 |
| 20 | 0.002 | 0.00015 |
Calibration Check
1. Connect the UPS-III to the electrical calibrator. Switch on the electrical
calibrator and allow it to thermally stabilize.
2. Switch on the UPS-III and allow the instrument to thermally stabilize.
3. Set the UPS-III to mA measure, adjust the electrical calibrator to apply
the first value in the Table 3. Record the reading of the UPS-III.
4. Repeat step 3 for all the values in the Table 3.
5. Compare the recorded values and the applied values if the difference is
greater than the permitted error, the instrument requires a calibration
adjustment.
6. Repeat this procedure for V measure (Table 4) and mA source (Table 5).
Calibration Adjustment
INFORMATION The UPS-III requires a two-point calibration on the V and mA range.
- Connect the UPS-III to the electrical calibrator. Switch on the electrical calibrator and allow it to thermally stabilize.
- Switch on the UPS-III and press , within two seconds to select Calibration. Enter the access code [9410 factory setting] and allow the instrument to thermally stabilize.
- Select the parameter required for calibration. Use the display menu to select the calibration values. After a successful calibration enter the new calibration date
Specification
Table 6: Physical Specification
| Item | Specification |
|---|---|
| Dimensions | 77 x 129 x 24 mm (3” x 5” x 1”) |
| Weight (nominal) | 275 g (9.7 oz.) |
| Terminals | 4 mm sockets |
| Case | High impact ABS |
| Environmental | IP40 |
| Relative Humidity | 0 to 90% |
Table 7: General Specification
| Item | Specification |
|---|---|
| Accuracy for one year | 17°C to 27°C (63°F to 81°F) |
| Outside these limits | 0.003%/°C (0.0015%/°F) |
| Reference | 22°C ± 1°C; Relative humidity 45% ± 15% |
| Battery Life | ≥ 75 hours in measure mode |
≥ 18 hours at 12 mA in source mode
Hart® Communications| Menu selectable 220 Ω loop resistor
Operating Temperature| -10°C to 50°C (14°F to 122°F)
Storage Temperature| -20°C to 70°C (-4°F to 158°F)
Table 8: Accuracy Specification
| Mode | Range | Resolution | Accuracy a |
|---|---|---|---|
| Source mA | 0 to 24 mAb | 0.001 | 0.01% rdg + 2 lsd |
| Source mA + 24V | 0 to 24 mAc | 0.001 | 0.01% rdg + 2 lsd |
| Measure mA | 0 to 24 mAb | 0.001 | 0.01% rdg + 2 lsd |
| Measure mA + 24V | 0 to 24 mAd | 0.001 | 0.01% rdg + 2 lsd |
| Measure V | 0 to 60 Ve | 0.001 | 0.02% rdg + 4 lsd |
| Continuity | <100 Ωf | – | – |
a. rdg = reading, lsd = least significant digits.
b. V maximum = 75V.
c. R maximum 1 kΩ at 20 mA.
d. R measure = 15 Ω.
e. R measure > 1 MΩ.
f. Audio and visual indication, 1 mA test current
Return Goods/Material Procedure
If the unit requires calibration or is unserviceable, return it to the nearest Druck Service Centre listed at: Druck.com/essential.
Contact the Service Department to obtain a Return Goods/Material Authorization (RGA or RMA). Provide the following information for a RGA or RMA:
- Product (i.e. UPS-III)
- Serial number.
- Details of defect/work to be undertaken.
- Calibration traceability requirements.
- Operating conditions.
Copyright 2003 Baker Hughes Company. This material contains one or more registered trademarks of Baker Hughes Company and its subsidiaries in one or more countries. All third-party product and company names are trademarks of their respective holders.