Omega Products RHCL-2 User Manual

High Accuracy Portable
Relative Humidity/Temperature
Calibrator

RHCL-2

Standard

U RHCL-2 Field Proven

Optical Chilled Mirror
(OCM) Technology

U Completely Self-

Sufficient and Portable
Humidity Calibration
System

U Highest Accuracy

Available for Both RH
and Temperature (AT):
RH Range: 5 to 95%

U 10 to 50°C Air

Temperature Range

U Temperature and RH

Controlled Independently

U Automatic Correction for

Mirror Contaminants

U Certified Measurements

Against NIST Traceable
Standards

The OMEGA® RHCL-2 is
a microprocessor based,
programmable humidity calibration
system that is at home in the
metrology lab or out in the field
performing on site NIST traceable
humidity calibrations. The RHCL-2
is entirely self-sufficient and does
not need compressed air or a water
connection to operate, which allows
this system to be truly portable.
The system offers the highest
accuracy available for both relative
humidity and ambient temperature.
Temperature and relative humidity
are controlled independently;
therefore, you are not limited to
performing calibrations at the
surrounding ambient temperature.

The RHCL-2 uses an Optical Chilled
Mirror (OCM) primary measurement
technique for traceability and
feedback control. Contributing to
ease of use are features such as

maintenance reducing Automatic
Balance Cycle (ABC), an integral
ambient temperature probe, and
D2 chilled mirror sensor which are
located in the sample chamber
providing not only superior accuracy
but the fastest response.

The RHCL-2 employs a unique
control scheme for maintaining
precise RH control. The system
incorporates volumetric proportional
control valves. By independently
modulating the “dry” and “wet”
valves from full-open to full-close,
and all points between, any desired
humidity can be quickly generated.
Additionally, because the RHCL-2
is continuously monitoring the
sample chamber conditions via its
integral chilled mirror, it is able to
instantaneously react to changes
in humidity and maintain control
stability.

To Order Visit omega.com/rhcl-2 for Pricing and Details

Model No. Description
RHCL-2 Portable RH/temp calibrator

RHCL-2-SR Seals for sample chamber, qty 20
RHCL-2-CCB Chamber covers without holes, qty 3
RHCL-2-DR5 Dessicant 5 lb jar

Comes complete with operator’s manual, power cord, cleaning kit and NIST certificate.
Ordering Example: RHCL-2, portable calibrator, RHCL-2-SR, seals, and RHCL-2-DR5,

5 lb jar of dessicant.

RHCL-2

Hu-50

Inset shows

detail of display.

Specifications

Range:
RH: 5 to 95% RH @ 10 to 50°C

Dew/Frost Point: -40 to 60°C
(-40 to 140°F)

Accuracy:
RH: ±0.5% RH @ ±0.2°C
Dew/Frost Point: ±0.2°C nominal
Slew Rate: 1.0°C (1.8°F)/sec max,

above 0°C

Repeatability: ±0.5%
Outputs: Anaolog (0 to 5 Vdc or

4 to 20 mA) and RS232C
Power Requirements: 100 to 240 Vac,
50 to 60 Hz, 150 W maximum

Sample Flow Rate: 1 liter/min (2.0 SCFH)
Operating Temperature (Control
Unit): 0 to 50°C (32 to 122°F)
Weight: 15.4 kg (34 lb)
Dimensions: 52 W x 43.7 D x 21.7 cm H

(20
Enclosure: Ultra high-impact copolymer
carrying case

5

⁄8 x 173⁄16 x 89⁄16")

H

u