Omega Products CTH89 User Manual
Circular Chart
Recorders
Temperature, Humidity,
Dewpoint Recorders
CTH89 Series
Optional
U 152 mm (6")
Circular Chart
U Advanced
Microprocessor
Design for Reliable
Operation
U Backlit LCD
Alphanumeric
Display
U All Functions
Selectable from
the Front Panel
U Battery Backup for
Operation During
Power Failure
U Alarm for Over and
Under Temperature
or Humidity
U Selectable Alarm Delay
U Audible and Visual
Alarm Indication
U Probe is Field
Replaceable and
Calibrated with No
Special Equipment
U Chart Number Displayed
When Time and
Temperature Ranges
Are Selected
U Selectable Single or
Continuous Chart
Rotation
U Low Battery Warning
on Display
U Fold Away
Carrying Handle
U Snap-on Extra
Support Legs
CTH89-RP replacement
CTH89.
probe available.
Probe included.
U Remote Sensor
U Temperature/Humidity
or Dewpoint/Humidity
Recording
S-59
Specifications
With Combined 18 Speed
and Temperature Ranges and
4.5 m (15') Remote Probe, 115 Vac
with 48-Hour Battery
Primary Power: 115 Vac, 50/60 Hz,
3.5 W max (220 to 240 Vac,
50/60 Hz optional)
Backup Power: 8 “AA” alkaline
batteries (included) for 48 hours
continuous operation
Temperature Accuracy: ±1°C (±2°F)
Relative Humidity Range:
0 to 100% (non-condensing)
Relative Humidity Accuracy: ±3%
Dewpoint Range: 0 to 50°C
(32 to 120°F)
Dewpoint Accuracy: ±1°C (±2°F)
Probe: Combined temperature/humidity
with 4.5 m (15') cable
Chart: 152 mm (6") circular chart
(supplied with 60 assorted charts)
Chart Rotation Speeds:
User selectable: 7-day, 24-hr, 12-hr,
6-hr, 3-hr, and 1.5-hr
Chart Rotation: User selectable
continuous or single turn
Chart Speed Accuracy: Better than 1%
Display: Alphanumeric backlit LCD,
16 characters x 2 lines
Temperature Alarm Range:
-30 to 50°C (-20 to 120°F)
Relative Humidity Alarm Range:
0 to 100% RH
Alarm Delay Range: User selectable,
no delay, 10-min, 30-min, 1-hr,
and 2-hrs
Remote Alarm Connection:
Normally open contacts 48 Vac/Vdc,
0.1 A resistive load
Mounting: Vertical or horizontal
free standing or wall mount
Dimensions:
23.5 H x 18.4 W x 7.0 cm D
1
(9
⁄4 x 71⁄4 x 23⁄4")
Operating Ambient Temp. Range:
0 to 49°C (32 to 120°F)
Weight: 20.1 kg (4 lb, 7 oz)
Extended Warranty
OMEGACARESM extended warranty program
is available for models shown on this page.
Ask your sales representative for full details
when placing an order. OMEGACARE
covers parts, labor and equivalent loaners.
Back-Up
SM
Program
SM
Don’t Forget the
Accessories! Please Refer
to the Ordering Table for a
Complete Selection of Charts
and Replacement Pens.
CTH89 Series
To Order Visit omega.com/cth-89 for Pricing and Details
Model No. Description
CTH89 152 mm (6") circular chart temperature/
humidity or dewpoint/humidity recorder
110 Vac operation
CTH89-220V 152 mm (6") circular chart temperature/
humidity or dewpoint/humidity recorder
220 To 240 Vac operation
CTH89-PEN-RED Replacement red pen
CTH89-PEN-BLUE Replacement blue pen (humidity)
CTH89-RP Replacement probe with 4.5 m (15') cable
CTH89C-MIX Replacement charts (box of 60)
(5 of of each range)
CTH89C-
(*) Replacement charts (box of 60)
see range code below
CAL-3-HU
NIST traceable calibration certificate for CTH89
MN1500 “AA” batteries (pack of 2)
Insert range code from chart below.
*
Chart Range Code Record Time Temperature Range
E20120F12 12-hr
E20120F24 24-hr -20 to 120°F
E20120F7 7-day
E2050F12 12-hr
E2050F24 24-hr -20 to 50°F
E2050F7 7-day
E40110F12 12-hr
E40110F24 24-hr 40 to 110°F
E40110F7 7-day
E3050C12 12-hr
E3050C24 24-hr -30 to 50°C
E3050C7 7-day
E3010C12 12-hr
E3010C24 24-hr -30 to 10°C
E3010C7 7-day
E545C12 12-hr
E545C24 24-hr 5 to 45°C
E545C7 7-day
Comes complete with red and blue pens, box of 60 assorted charts, probe with 4.5 m (15')
cable, 8 “AA” batteries, AC adaptor, and operator’s manual.
Recording charts (use 12 hour chart for 1.5-3 and 6 hour speeds).
Ordering Examples: CTH89 and CTH89C-E20120F12, circular chart replacement chart,
12 hour record time, -20 to 120°F range, box of 60.
OCW-3, OMEGACARESM extends standard 1-year warranty to a total of 4 year.
S
S-60
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