Relative Humidity Transmitter
Model HX92C
190
$
U 4-20mA or 0-1V Output
U Compact Size for
Mounting Versatility
U Watertight Enclosure
U Accurate to 2.5% RH
The model HX92 is an economical
humidity transmitter, providing on-site
continuous monitoring of relative
humidity. It is a 2-wire transmitter with
either voltage or current output. The
transmitter output is linearized, and RH
readings are temperature compensated.
A thin-film polymer capacitor senses
relative humidity. The sensor is
protected by a stainless mesh-type filter
that is easily removable for cleaning.
The case and weathertight protection,
and screws are provided for mounting
the unit via internal hole. An unusually
low minimum voltage of 6 V allows the
use of large impedances for longer wire
runs. The HX93 is a similar unit that
provides transmitter outputs for both
humidity and temperature.
MADE IN
USA
Specifications
Input Voltage Range:
24 Vdc nominal
(6 to 30 Vdc)
Measuring Range
RH: 3 to 95%
Temperature:
-20 to 75°C
(-4 to 167°F)
Accuracy
RH: ±2.5% @75°F
with temperature
coefficient of
-.06 RH/°F
Output
HX92C: 4 to 20 mA
for 0 to 100% RH
HX92V: 0 to 1Vdc
for 0 to 100% RH
To Order (Specify Model Number)
Model No.
HX92(*)
HX92-CAL
PSU-93
TX4-100
CAL-3-HU
Price Description
$190 Relative Humidity and Temperature Transmitter
65 Calibration Kit, 11 and 75% RH Standards
40 Unregulated Power Supply, 16 to 23Vdc, 300mA max
28.50 4 conductor shielded transmitter cable (100 ft)
125 NIST Traceable Calibration
*To order, Specify “C” for 4 to 20mA output(s), or “V” for 0-1 Vdc output(s)
Ordering Example: HX92C, humidity transmitter with current output, with HX92-CAL
Calibration kit and PSU-93 power supply, $190 + 65 + 40 = $295.
RH Temperature Compensation:
-20 to 75°C (-4 to 167°F)
RH Time Constant (90% response
at 25°C, in moving air at 1m/s):
>10 seconds, 10 to 90% RH;
>15 seconds, 90 to 10% RH
Repeatability: ±1% RH, 0.5°F
Housing:
ABS plastic watertight enclosure;
meets NEMA 1, 2, 3, 3R, 4, 4X, 5, 12
and 13 specifications
Connections: Liquid-tight nylon with
neoprene gland, for 0.09 to 0.265"
diameter cable; internal 4-pin terminal
block accepts 14 to 22 gage wire
Dimensions: 1.96" x 2.55 x 1.37"
Weight: 8 oz (226.8 grams)
Sling Psychrometer for Economical Humidity Readings
Specifications
Range: 10 to 100% RH for dry bulb temperatures from 30 to 100°F
Accuracy: ±5%RH
RHSP-F
RHSP-FR
RHSP-FT
RHSP-FRT
RHSP-W
74
Price Description
$74
74
28
26
13
Model RHSP
$
To Order (Specify Model Number)
Model No.
Consult Engineering
for OEM Applications
Psychrometer with mercury filled thermometer
Psychrometer with red spirit filled thermometer
Replacement mercury thermometer
Replacement red spirit thermometer
10" Wicks, package of 4
Hu-29
This compact Instrument accurately determines
relative humidity, without the need of consulting
complex tables. Using wet and dry bulb
measurements, the RHSP features slide rule
construction to quickly and easily convert the wet
and dry temperatures to relative humidity. For fast
thermal response, the RHSP features thin bulb
design thermometers