EMERSON 4426R0 Refrigerant Leak Sensor Instruction Manual
- June 12, 2024
- Emerson
Table of Contents
SC-Series Refrigerant Leak Sensor
Wiring and Controller Setup
General
The SC refrigerant leak sensor is a series of transmitters for measuring
concentration of different gases. The transmitter is available in the Standard
Room Type. The sensor heads are semi-conductive, which provides a long
lifetime and stability, but with limited selectivity.
The transmitter gives a non-linear output signal (4 to 20mA or 0 to 10V DC)
proportional to the gas concentration. For long wiring installations, it is
recommended to use the current output signal to minimize the risk of
interference. Output signal mode is set by jumper (JP1).
Technical Data
| Sensor Type | Semiconductor |
|---|---|
| Response Time (T90) | < 10 seconds |
| Operating Temperature | -40°F to 122°F (-40°C to 50°C) |
| Operating Humidity | 10 to 90% Rh (non condensing) |
| Dimensions | 130x82x56 mm |
| Housing | Polycarbonate / ABS |
| Output Signal | 4 to 2OmA (max 500 ohm) or 0 to 10V DC |
| Calibration | Zero/span ? once per year |
| Lifetime Sensor | > 5 years (replacement recommended every 5th year or when |
unit cannot be calibrated)
Power Supply| 12 to 30V DC (24V DC is recommended)
Cable gland| 1 x M16
Table 1 – Sensor Technical Specs
*Specifications subject to change
Leak Sensor Setup (4-20 mA to 1-5 VDC) Connected to MultiFlex Boards
250-ohm Resistor Required
Part Number| Refrigerant| Low End Point – High End Point| Low End EU – High
End EU| Voltage -1000 PPM
---|---|---|---|---
809-1201| R404a| 0-5| 0-2000| 2.5 V = 1000 PPM
809-1202| R407a| 1-5| 0-2000| 3.0 V = 1000 PPM
809-1203| R448a| .5-6.5| 0-2000| 3.5 V = 1000 PPM
Supervisor Controller Setup
In your E3 or Site Supervisor, add a 16AI Board and go to the application page
to set up the leak sensor settings.
Set up the leak sensor settings as they
appear on this screen:
UltraSite Setup
- To set up the leak detector using UltraSite, open and login:
- Right-click on the site and choose Connect:
- Or right-click on E2 and select Offline Programming:
- Right-click on E2 and select Add New Application:
- Select Hardware AI for Cell Type, enter How Many, name the point and click Add:
- The point is now added. Next, highlight the point and click OK:
- Assign the point to the MultiFlex Board (this is the point you connect the sensor to). Highlight the point and click OK:
- Select Linear as the Point Type and click OK:
- Once this message appears, click OK:
- When the confirmation message appears that confirms the application has been added successfully, click Close:
- The point is now visible in the tree:
- Right-click on the point and select Edit Application:
- In the Setup tab, select PPM as the Eng Units and Sensor Units:
- In the Scaling tab, set up points based on the following chart:
Part Number| Refrigerant| Low End Point –
High End Point| Low End EU – High End EU| Voltage – 1000 PPM
---|---|---|---|---
809-1201| R404a| 0-5| 0-2000| 2.5 V = 1000 PPM
809-1202| R407a| 1-5| 0-2000| 3.0 V = 1000 PPM
809-1203| R448a| .5-6.5| 0-2000| 3.5 V = 1000 PPM
E2 Setup
-
Log into the E2 and press (Input Status screen).
-
Highlight the input point the sensor is connected to, and press (Setup).
-
In the Analog Input setup screen, enter the following information in the fields listed below:
• Name: A description of the sensor’s function and/or location (LEAK DET .01).
• Sensor Type: Linear
• Eng. Unit: PPM
• Low End Point: 1.0 Low End Limit: -0.50
• High End Point: 5.0 HighEnd Limit: 2200.0 -
Press to save changes and exit the Analog Input setup screen.
Document Part # 026-4426 Rev 0
©2022 Emerson Digital Cold Chain, Inc. This document may be photocopied for
personal use.
This document may be photocopied for personal use.
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