Omega Products HX94C User Manual
Hu-38
H
u
1.0 m
(3.0')
CABLE
4-PIN
CONNECTOR
19 (0.75) dia.
25.4 to 227
(1 to 9)
VARIABLE
DEPTH
FLANGE
REMOVABLE
STAINLESS STEEL
FILTER CAP
254 (10.0)
Comes with mating connector, removable protective sensor filter, removable duct flange,
wall mounting bracket, and operator’s manual.
Ordering Example: HX94C, duct mount RH/temperature transmitter with 4 to 20 mA output, $275.
To Order
(Specify Model Number)
Model No. Price Description
HX94C $275 RH/temp transmitter with 4 to 20 mA outputs with 4 pin connector
HX94V 275 RH/temp transmitter with 0 to 1 Vdc outputs with 4 pin connector
HX94CW 245 RH/temp transmitter with 4 to 20 mA outputs with 1 m (3') lead wires
HX94VW 245 RH/temp transmitter with 0 to 1 Vdc outputs with 1 m (3') lead wires
HX94CNPT 255 RH/temp transmitter with 4 to 20 mA outputs with
1
⁄2 male
NPT fitting and 1 m (3') leads
HX94VNPT 255 RH/temp transmitter with 0 to 1 Vdc outputs with
1
⁄2 male
NPT fitting and 1 m (3') leads
HX94-MC 10 Spare 4-pin mating connector
PSR-24S 60 Regulated power supply, US plug, 90 to 264 Vac input, 24 Vdc output,
400 mA, screw terminals, UL
PSR-24L 60 Regulated power supply, US plug, 90 to 264 Vac input, 24 Vdc output,
400 mA, stripped leads, UL
PSR-24L-230 60 Regulated power supply, European plug, 230 Vac input, 24 Vdc output,
400 mA, stripped leads, CE
PSU-93 40 Unregulated power supply, 16 to 23 Vdc, 300 mA max, screw terminal
TX4-100 28.50 4 conductor shielded transmitter cable, 30 m (100')
CAL-3-HU 125 NIST-traceable calibration
4
3
2
1
+
*R2
*R1
PROBE
CONNECTOR
*R1 and R2 CAN
COMBINE IN
ONE WIRE PLUS
JUMPER PINS 1 AND 2
TEMP.
METER
OR
RECORDER
RH METER
OR
RECORDER
6-30 VDC
POWER
SUPPLY
R LOAD R LOAD
MAX R LINES = (V SUPPLY-6)/0.02
For 1 to 5 Volt Output, R Load = 250 Ohm
-
+
-
+
-
4
3
2
1
+
PROBE
CONNECTOR
TEMP.
METER
OR
RECORDER
RH METER
OR
RECORDER
6-30 Vdc
POWER
SUPPLY
-
+
-
+
-
HX94C Current Hook-Up
HX94V Voltage Hook-Up
Probe: 254 x 19 mm (10 x 0.75") Dia.,
305 mm (12") cable
Duct Flange: Removable, variable
25.4 to 227 mm (1 to 9") depth. 70 mm
(2.75") Dia., duct hole 21 mm (0.812") Dia.
4 mtg holes; 4 mm (0.156") Dia. (for #6
sheet metal screws) on 51 mm (2.00") Dia.
circle; wall mounting bracket included
Connections:
HX94C/94V: 4 pin mating connector
accepts 26 to 18 AWG wires
HX94CW/94VW: 1 m (3') braided and
shielded cable, PVC sheathing
HX94CNPT/94VNPT:
1
⁄2 male NPT
conductor with 1 m (3') braided/shielded
cable
Weight: 198 g (7 oz) with duct flange
HX94 Series
Starts at
$
245
Specifications
Relative Humidity
Thin-film polymer capacitor
Input Voltage Range:
6 to 30 Vdc, (polarity protected)
Range/Accuracy/Repeatability:
3 to 95% RH/±2% RH/±1% RH
Temperature Compensation:
-20 to 85°C (4 to 185°F)
Current Output:
HX94C: 4 to 20 mA (0 to 100% RH)
Voltage Output:
HX94V: 0 to 1.0V (0 to 100% RH)
Time Constant: (for 90% response at
25°C; in moving air, 1m/sec.)
Less than 20 seconds, 10 to 90% RH
Less than 30 seconds, 90 to 10% RH
Temperature
Thin-film 100 Ω Platinum RTD
(DIN 43760)
Input Voltage Range:
6 to 30 Vdc, (polarity protected)
Range: 0 to 100°C (32 to 212°F)
Accuracy: ±0.6°C (±1°F)
Repeatability: ±0.3°C (±0.5°F)
Current Output:
HX94C: 4 to 20 mA for 0 to 100°C
Voltage Output:
HX94V: 0 to 1.0V for 0 to 100°C
Time Constant: (for 60% response)
Less than 2 seconds in moving air
(1m/sec) less than 10 seconds in still air
Mechanical
Housing: Stainless steel NEMA 4
enclosure
⻬ Stainless Steel
NEMA 4 Housing
⻬ 3 Different Output
Connection Styles
Available for
Mounting Versatility
⻬ 4 to 20 mA/0 to 1 Vdc Outputs
⻬ Removable Stainless Steel
Sensor Filter for Cleaning Ease
Relative Humidity
Temperature Transmitters
The HX94 relative humidity/
temperature transmitter provides
a reliable and low cost method
for duct mount monitoring
applications. Solid state
sensors provide excellent
sensitivity, fast response, and stability.
Simple hookup and linearized
output permit interfacing with most
display and control devices.
Dimensions: mm (in)
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