Nidec PG-35H Pressure Gauge Instruction Manual

: June 11, 2024
: Nidec

Nidec PG-35H Pressure Gauge

Nidec-PG-35H-Pressure-Gauge-PRODUCT

Thank you for purchasing a NIDEC COPAL ELECTRONICS CORP. product.
In order to use the product correctly and most appropriately, please completely read this manual before use and keep it for future reference.
For more detailed information please ask for the nearest distributor or the following sales center.
Nishi-Shinjuku Prime Square., 7-5-25
Nishi-Shinjuku, Shinjuku-ku, Tokyo 160-0023 Japan https://www.nidec-copal-electronics.com

Important Information and Warnings

For stability, use a regulated direct current power supply.
Surge-absorbing devices（diodes, varistors, etc.）are necessary if inductive loads such as relays or solenoids are connected to the same circuit as the PG-35H.
If using a DC power supply unit such as a switching power supply, the FG terminal should be earthed. Do not wire in parallel to high-tension cables or power lines, or use cable ducts that contain high-tension cables or power lines.
Be careful not to crimp any wires during handling, or put any pressure on the display area of the main body while assembling piping.
Use pH-neutral detergents to clean the body. Do not use solvents such as thinners.
This product is dust-proof and drip-proof （IP65 of IEC standards）and is not suitable for use in environments requiring higher standards.
Also, do not use this product in an environment with a possibility of the product being covered by liquids other than water（Such as oil, solvent, etc.）and outdoors.
Do not use pointed objects such as pens to press the setting buttons on the display panel, as this may push holes in the setting buttons and damage them.
Do not insert wires, etc. in the pressure port, as this may damage the internal diaphragm and cause malfunctioning.
The PG-35H series do not have an explosion-proof structure. Power supply unit
Do not use it for the detection of ﬂammable gases.
When an analog output is supplied to a noise-sensitive device,a low-pass ﬁlter is requested in a customer’s circuit. Countermeasures for noise interference:
Please connect either the shield wire or the metal part of the product to the frame ground（FG）of the power source.
In case a wire extension is needed, please use a shielded wire.

Speciﬁcations

Nidec-PG-35H-Pressure-Gauge-FIG-2

Output Electrical Diagram

（Wire colors correspond to IEC standards）

Function Names

Nidec-PG-35H-Pressure-Gauge-FIG-4

Operating Procedures

Nidec-PG-35H-Pressure-Gauge-
FIG-5

Initial Settings Mode

Nidec-PG-35H-Pressure-Gauge-
FIG-6

Multiplier factor Setting

The multiplier factor setting is determined by the value of the third digit : the red －LED should be ﬂashing during the setting.

| Pressure range（－Pr～+Pr）
---|---
| Multiplier factor| 104R| 354R
Value selected| 1| | |
2| ×0.0102| －1.0～99.9| －1～357
3| | |
4| | |
5| | |
6| ×0.01| －1.0～99.9| －1～350
7| | |
8| | |
9| ×145| －0.01～1.45| －0.01～5.07
A| ×0.001| －0.10～9.99| －0.1～35.0
b| | |

Sections containing an oblique stroke are multiplier factors that cannot be selected because of resolving power or display digits.
Values will not be displayed automatically.
Note: “A” is set prior to delivery.

An example of setting “2”.

Change of magnification setting is effective only for pressure reading. Set values for switching are not scaled automatically.

Analog Output Setting

The analog output setting is determined by the value of the second digit: the green SW1 LED should be flashing during the setting.

| －Pr 0 ＋Pr
---|---
Value selected| | Mode
1| R mode（Compound pressure output）| 1V(Vzero) 5V

1V 5V

2| G mode（Positive pressure output）

An example of setting the R mode in the 104R range. Nidec-PG-35H-Pressure-
Gauge-FIG-8

Note: G modes are set prior to shipment.

Switch Output Setting

The switch output setting is determined by the value of the first digit: the red SW2 LED should be flashing during the setting. Nidec-PG-35H-Pressure-
Gauge-FIG-9

There are four operation modes. These are shown in the diagrams below. Nidec-
PG-35H-Pressure-Gauge-FIG-10

Note 1. In the Separate Mode, setting 1 corresponds to SW1, and Setting 2 corresponds to SW2.
Note 2. In the Window Comparator Mode, the minimum value for SW1 and SW2 corresponds to Setting 1 and the maximum value corresponds to Setting 2.

Window Comparator Mode
An example of setting the value“7”for the mode shown in the diagram Nidec-PG-
35H-Pressure-Gauge-FIG-11

Pressure Settings Mode

Nidec-PG-35H-Pressure-Gauge-
FIG-12

Switch Output Setting

To set switch output 1 the SW1 LED should be ﬂashing. （To set switch output 2 the SW2 LED should be ﬂashing.） An example of setting 6MPa for switch output 1（SW1 LED is ﬂashing）with 104R. Nidec-PG-35H-Pressure-Gauge-
FIG-13

Note:+50%F.S. is set prior to delivery.

To set hysteresis the“－”LED should be ﬂashing.
An example of setting a hysteresis value of 0.8MPa with the 104R（MPa）. Nidec-
PG-35H-Pressure-Gauge-FIG-14

Note:20counts is set prior to delivery.

Digital Filter setting

To set Digital Filter all LED should be not ﬂashing. An example of setting 2.5s response time by Digital Filter. Nidec-PG-35H-Pressure-Gauge-
FIG-15

Note:“F-0”is set prior to delivery.

Troubleshooting

If the following error messages are displayed, follow the procedures in the table.

Display and problem	Cause	Solution
E-1	Output current is exceeding 100mA.	Turn oﬀ the power and verify the load

connected switch output 1 and 2.

E-2| Pressure was applied at the zero point

adjustment.

| Press M button and return the applied pressure to the

atmospheric pressure and try zero-point adjustment again.

E-3，E-4| Failure of the internal circuit.| Please contact us. Please use a regulated DC power

supply and measures for the power line noise.

999Flashing| Pressure values exceed the display range.| Normal state
Flashing of the

pressure valie

| Pressure values exceed the rated pressure

range（. 110%FS）

| Normal state
Black out of the

display

| Non-display mode| Normal state（See Non-display mode.）
Disable the key

operation

| Key protection mode| Normal state（See Key protection mode.）

Zero point Adjustment

Pressing the buttons simultaneously in the Operations Mode displays on the screen. One second later this change to when the buttons are released（. If the pressure port is opened to the atmosphere.）
Note: You have to adjust Zero under open air condition. Otherwise you can be seen E‐2 error as you adjusted Zero with residual pressure.

Others

Piping

Use a wrench on the aluminum die-casting. Do not hold the plas tic case when tightening.
Apply sealing tape at the male screw area（R2 type）to protect against air leaks.

Non-Display Mode

〈Non-Display［Temporary］Mode〉

When the keys are not operated for more than 10 seconds during Operation Mode, the system will automatically select Non-Display［Temporary］Mode and the display will turn oﬀ.
Decimal point LED shown in the ﬁgure below will blink during Non-Display［Temporary］Mode
Using the EEPROM, the PG-30/35 series can retain preset valies even if the power is turned oﬀ.
If an error message is detected, the display will comeback and show the error message.
You can change any functions during Non-Display［Temporary］Mode
To enable Non-Display［Temporary］Mode, press the key for more than 4 seconds. will be displayed and Non-Display［Temporary］Mode will be set After 10 seconds. the display will go off.
To disable Non-Display［Temporary］Mode, press the key for more than 4 seconds. will be displayed and Non-Display［Temporary］Mode will be canceled.

〈Non-Display［Full-time］Mode〉

In Non-Display［Full-time］Mode, the display will be turned off and the keys will be locked.
Decimal point LED shown in the figure below will light up during Non-Display［Full-time］Mode.
Using the EEPROM, PG-30/35 series can retain the preset values even if the power is turned off.
You cannot change any functions during Non-Display［Full-time］Mode.

How to set

To enable Non-Display［Full-time］Mode, press (M) the key for more than 4 seconds. will be displayed and Non-Display［Full-time］Mode will be set. The display will turn off in a second.
To disable Non-Display［Full-time］Mode, press an (M) key for more than 4 seconds. will be displayed and Non-Display［Full-time］Mode will be canceled.

Key Protection Mode

key Protection Mode is used to lock the front panel key in order to prevent preset values from being accidentally changed.
Using EEPROM. the PG-30/35 series can retain the preset values even if the power is turned off.

How to set

To enable Key Protection Mode, press the key for more than 4 seconds. will be displayed and the keys will be locked.
To disable Key Protection Mode, press a key for more than 4 seconds. will be displayed and the keys will be unlocked.

Outline Dimensions

Unit: mm

PG-35H Outline Dimensions
Fitting part : R2 type Nidec-PG-35H-Pressure-Gauge-
FIG-30

Fitting part: G3 type Nidec-PG-35H-Pressure-Gauge-
FIG-31

Brackets Option

PG-35H Holder cover set （sold separately） Nidec-PG-35H-Pressure-Gauge-
FIG-32

Accessories Sold separately

Product name	Model no.	Description	Appllcable model

Holder cover set

（for protection of gauge sides）

| ACPG-004| Panel holder cover, panel holder| PG-30／35 PG-35H

Note Since this product contains small components, please handle this product carefully.
The product can be damaged if an unwanted force is applied.