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Microprocessor-Based Temperature/Relative Humidity Circular Chart Recorder Discontinued (Replaced by CTXL) |
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Available in Computer Room White or Charcoal Gray
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Versatile Remote Mounting Sensor
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Convenient Front Panel Programming
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200 mm (8") Chart for 1, 7, or 32-Day Recording
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Fully Electronic Microprocessor Control
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Benchtop or Wall Mounted
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Alarm Contact Standard
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Sensors Not Recommended for Use in a Corrosive Environment
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View related products - Recorders
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The CT485B is NO LONGER AVAILABLE, Please review our LATEST CTXL SUPERECORDER™
The Model CT485B completely self-contained temperature/ relative humidity recorder is microprocessor based to accurately measure, indicate and record temperature and relative humidity.
This rugged unit comes standard with alarms. They contain a single, integral relay contact which closes in response to an alarm condition. Simultaneous high and low alarm points for temperature and relative humidity are user selectable. When the current conditions exceed any of the preset values, the 2 Amp relay contact closes and an audible alarm sounds. A power adaptor (115VAC or 230 VAC +/- 10% , 50/60 Hz) is supplied for continuous long-term operation, along with four D-cell batteries for backup power or field use.
Specifications
Measurement Inputs: Temperature and humidity, with plug-in external sensor, removable for remote location,
2 m (6') extension cable included; 0.02 to 1.20 Vdc signal with voltage input adaptor
TEMPERATURE
Range: -17 to 49°C (2 to 120°F)
Accuracy: ±1°C
Sensor: Solid state
Response Time: 5 minutes for 63% step change
Display Resolution: 1°C/1°F, backlit LCD
HUMIDITY
Range: 2 to 98% RH
Accuracy: ±3% @25°C, between 20 and 90% of range (±5% below 20% and above 90% @25°C)
Sensor: Resistive polymer. Not recommended for use in corrosive air environments
Response Time: 5 minutes for a 30 to 80% step change
Display Resolution: 1% RH 21/2 digit LCD, backlit, 12.7 mm (0.5") high; low battery
Display Modes: Front panel switchable between °C, °F and %RH for continuous
digital display; max/min storage for both temperature and humidity or flashing to
indicate alarm condition
ELECTRONICS
Type: Microprocessor-controlled and linearized high and low peak hold for both
temperature and humidity, re-initializes position at every chart change
CHART
Type: 203 mm (8") circular, linear radial divisions, double sided; 1, 7 and 32 days,
°C and °F scales
CHART DRIVE
Type: Stepper motor
Ranges: 1, 7 and 32 day, selectable
Accuracy: 1% of rotation
Chart Hold Down: magnetic hub lock
RECORDING PENS
Type: Disposable fiber tip, red for temperature, blue for humidity
PEN DRIVES
Type: Motorized linear screw drive
Deadband: 1°F, 1% RH
Zero: Automatic zero during chart change or power interruption
Penlift: Automatic on door opening; pens are door mounted and swing clear of the chart when door opens
Pen Arms: Clear plastic to allow full chart viewing
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OPERATING CONDITIONS (RECORDER)
Temperature: 0 to 49°C (32 to 120°F)
Humidity: 0 to 90% RH, non-condensing
OPERATING CONDITIONS (SENSOR REMOTE)
Sensors not recommended for use in a corrosive environment
Temperature: -17 to 49°C (2 to 120°F)
Humidity: 0 to 98% RH
ALARMS
Alarms: User-selectable for high or low temperature and humidity
Audible Alarm: Integral piezoelectric beeper
Alarm Relay Contacts: 1 Amp, 30 Vdc normally open, single pole, single throw (SPST)
Power (Recorder): Four D cells batteries (included) and 9 Vdc/110, 50/60 Hz power adaptor (supplied);
220 Vac power adaptor supplied where applicable
Battery Life: more than 1 month continuous operation in 32-day mode (average conditions)
Power Requirements: 300 mA “normal” during pen movement for battery (dc) power; 500 mA “normal”
during pen movement for ac power using ac adaptor with chart lights on
Note:the light bulbs drain 200 mA of current
DC Power Jack Voltage: 8.3 to 12.4 Vdc (nominal 9 Vdc), 1 Amp max.
MECHANICAL
Dimensions: 33.5 H x 27.1 W x 6.7 cm D (133/16 x 1011/16 x 25/8")
Weight: Approx. 3.2 kg (7 lb) including batteries
Mounting: “Keyhole” slots for wall mounting; foot cover for benchtop use
Case: Rugged ABS plastic
ANALOG VOLTAGE
INPUT ADAPTOR
Input: 20 mVdc to 1200 mVdc records as -17 to 49°C, (2 to 120°F) input protection up to 20 Vdc or 10 Vac RMS
Input Impedance: 330 Kohms min.
Input Connections: Banana jacks, 19 mm (0.75") spacing
Cable Length: 305 mm (12")
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View the CT485 Product Information Slideshow - Windows Media Player Required! Get Windows Media Player
The CT485B is NO LONGER AVAILABLE, Please review our LATEST CTXL SUPERECORDER(tm)
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† All dollar amounts on this site are shown in US currency.
Note: Complete with 120 Assorted Double-Sided Charts with quick start manual, Complete Operator's Manual, Unpacking information sheet, Notice “Foot cover removal”, Light bulb replacement kit, 2 Sets of Pens, 6' Remote Sensor Cable, Wall Mounting Kit, Cal-Lock Kit, D Batteries, and ac Adaptor. Specialty Paper (All double-sided, packages of 20 charts)
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Part Number Builder |
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Option Descriptions
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(1)
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Specialty Charts
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Select
MWF for Museums/art galleries 7 days (in °F) (65° to 72°F) 40 to 50% RH
MWC for Museums/art galleries 7 days (in °C )18.3 to 22.2 (65° to 72°F) 40 to 50% RH
MMF for Museums/art gallery 32 days (in °F) 18.3 to 22.2 (65° to 72°F) 40 to 50% RH
MMC for Museums/art gallery 32 days (in °C )18.3 to 22.2 (65° to 72°F) 40 to 50% RH
HWF for Hospitals 7 days (in °F) (68° to 74°F) 40 to 50% RH
HWC for Hospitals 7 days (in °C ) 20 to 23.3 40 to 50% RH
HMF for Hospitals 32 days (in °F)(68° to 74°F) 40 to 50% RH
HMC for Hospitals 32 days (in °C ) 20 to 23.3 40 to 50% RH
LWF for Lab clean rooms 7 days (in °F)(68° to 75°F) 40 to 55% RH
LWC for Lab clean rooms 7 days (in °C) 20° to 23.9°C 40 to 55% RH
LMF for Lab clean rooms 32 days (in °F)(68° to 75°F) 40 to 55% RH
LMC for Lab clean rooms 32 days (in °C) 20° to 23.9°C 40 to 55% RH
PWF for Computer rooms/offices 7 days (in °F)(65° to 75°F) 45 to 60% RH
PWC for Computer rooms/offices 7 days (in °C)18.3° to 23.9°C 45 to 60% RH
PMF for Computer rooms/offices 32 days (in °F)(65° to 75°F) 45 to 60% RH
PMC for Computer rooms/offices 32 days (in °C)18.3° to 23.9°C 45 to 60% RH
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NOTE: All combinations may not be valid, check spec sheet for valid part numbers.
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