Setra Systems

SRH300 Humidity and Temperature Transmitter

Accurately measures RH and temperature and calculates dew point, absolute humidity and mixing ratio

This product is obsolete and has been replaced by:
SRH200 Humidity and Temperature Transmitter

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Remote Probe Model - Probe & Cable Assembly Sold Separately (SRP300)

The Setra Model SRH300 meets the highest requirements in demanding climate control applications. In addition to the accurate measurement of relative humidity (RH) and temperature (T), the Model SRH300 calculates various RH related parameters such as dew point, absolute humidity and mixing ratio. All measured and calculated values are available on the BACnet MS/TP or Modbus RTU interface. Two measured values are available on the analog voltage or current outputs, while up to three values can be shown simultaneously on the optional display.

Excellent performance of the Model SRH300 in aggressive or polluted environments is ensured by encapsulating the measurement electronics inside the sensing probe.

The Model SRH300 is available in wall or duct mounted versions as well as with remote probe. The IP65/NEMA 4 enclosure minimizes installation costs and provides outstanding protection against contamination and condensation.

• Excellent long-term stability
• BACnet MS/TP and Modbus RTU compatible
• Sensor coating protects sensing element and extends performance
• Display with selectable layout
• Wall, duct, and remote probe options available

Power Supply 4-20 mA, 2-wire: 10 V + RL x 20 mA < V+ < 30 VDC
0-20 mA, 3-wire: 15-30 VDC or 24 VAC 20%
0-5 V, 0-10 V, RS485: 15-30 VDC or 24 VAC 20
Current Consumption at 24 V Voltage output: DC supply max: 12 mA; w/display max: 23 mA, AC supply max: 34 mArms; / display max: 49 mArms

Current output (2-wire): DC supply max: 40 mA; w/display max: 40 mA
Current output (3-wire): DC supply typ: 33 mA; w/display max: 44 mA, AC supply typ: 65 mArms; / display max: 84 mArms

Digital interface: DC supply typ: 5 mA; w/display max: 20 mA, AC supply typ: 15 mArms; / display max: 35 mArms

Display 1, 2 or 3 lines, user configurable
Connection Screw terminals, max. wire 16 AWG
Housing Material Housing: Polycarbonate, UL94V-0
Faceplate: Polycarbonate UL94HB
Protection Class IP65/ NEMA 4
Gland Fitting PG9
Remote Probe Cable PVC, 4.3mm, 4 x 23 AWG;
Length: 1.5 or 3 m (4.9 or 9.8 ft.)
Electromagnetic Compatibility EN61326-1 EN61326-2-3 Industrial Environment
Temperature Ranges Operating: -4 to 122F (-20 to 50C)
Storage: -4 to 140F (-20 to 60C)
Relative Humidity (RH) Sensor HCT01-0
Working Range (RH) 0-100% RH
Accuracy including non-linearity, hysteresis, and repeatability at 5 to 105F ; 50% RH 1.45% RH
Remote probe accuracy including non-linearity, hysteresis, and repeatability at 5 to 70F ; 50% RH 2.5% RH
Analog Output 0-5 V, 0-10 V: -1 mA < IL < 1 mA
4-20 mA (2-wire): RL ≤ 500 Ω
0-20 mA (3-wire): RL ≤ 500 Ω
Digital Output RS485 (BACnet MS/TP or Modbus RTU), max. 32 SRH300 units on one bus

• Cleanrooms
• Operating rooms
• Patient isolation rooms
• Pharmaceutical labs
• Industrial manufacturing
• Compounding pharmacies

Remote probe assembly for the Setra SRH300
Normally ships in 1-2 Weeks
Starting At
$276.00 CAD