Greystone Energy Systems RH Series Catalog Page

RELATIVE HUMIDITY

TRANSMITTER

RH Series

Precision humidity
control/sensing

FEATURES:

• Highly stable RH sensor element

• Humidity range: 0-100%

• Accuracy available 2%, 3%, & 5%

• Choice of precision temperature sensors

• LCD display available

• Field selectable outputs

• AC/DC operation

• Custom logo available

Peace of mind

through reliable

humidity monitoring

GREYSTONE HAS AN ISO 9001 REGISTERED QUALITY SYSTEM

DESCRIPTION:

The RH series of humidity transmitters are designed for use in environmental monitoring and control
systems where high performance and stability are demanded. It’s state-of-the-art design combines
digital linearization and temperature compensation with a world class capacitive sensor for reliability
and accuracy in even the most critical applications. Various models cover many aspects of RH
measurement and several optional features are available to meet virtually all HVAC applications.

SPECIFICATION:

Sensor Type ..................................................Thermoset Polymer based capacitive

Accuracy........................................................ ±2, 3, or 5% RH, (5% to 95% RH)

Measurement Range................................. 0 to 100% RH

Temperature Dependence...................... ±0.05% RH/ ˚C

Hysteresis ...................................................... ±1.5% RH maximum

Repeatability................................................ ±0.5% RH typical

Linearity......................................................... ±0.5% RH typical

Sensor Response Time.............................. 15 seconds typical

Stability.......................................................... ±1% RH typical at 50% RH in 5 yrs.

Operating Temperature ........................... 0˚ to 70˚C (32˚ to 158˚F) for RH100

-40˚ to 85˚C (-40˚ to 185˚F) for RH200/RH300

Operating Humidity.................................. 0 to 95% RH non-condensing

Power Supply............................................... 18 to 30 Vdc, 15 to 26 Vac

Consumption............................................... 22 mA maximum

Input Voltage Eect ................................... Negligible over specied operating range

Protection Circuitry....................................Reverse voltage protected and out limited

Output Signal............................................... 4-20 mA current loop, 0-5 or 0-10 Vdc (jumper-selectable)

Output Drive at 24 Vdc ............................. 550 ohms max for current output

10K ohms min for voltage output

Internal Adjustments ................................ Clearly marked ZERO and SPAN pots

Wiring Connections................................... Screw terminal block (14 to 22 AWG)

Optional LCD Display................................ RH200A Only

3 digit for 00.0 to 99.9% RH, 24 x 11mm (0.95”w x 0.45”h)

Optional Temperature Sensor................Various RTDs and thermistors available as two-wire

resistance output (See Ordering Chart)

Enclosures..................................................... RH100B (Designer), IP20 (Nema 1), 70x114x30mm, (2.75”w x 4.5”h x 1.2”d)

RH200A (ABS), IP61 (Nema 2),114x84x53mm (4.5”w x 3.3”h x 2.1”d)
RH200E (Round), IP65 (Nema 4X), 91mm (3.6”) diameter x 53mm (2.1”) deep
RH200M (Metal), IP50 (Nema 1), 102x63x58mm (4”w x 3.3”h x 2.1”d)
RH200W (Metal WP) IP64 (Nema 3X),115x72x56mm (4.5”w x 2.8”h x 2.5”d)
RH300A (ABS WP) IP65 (Nema 4X),122x112x63mm (4.8”w x 4.8”h x 2.5”d)

RH200 Probe ................................................230 mm (9”) probe length x 12.7 mm (1/2”) diameter

stainless steel with porous lter