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Ambient + 5°C to 400°C Temperature Dry Block Calibrator

Portable Dry Block Calibrator


Item# CL-355A

In stock

Lead Time (If not in stock): 8 weeks
Portable Dry Block Calibrator CL-355A CL-355A
  • 10 Insert Formats Available
  • One Multi-Well Insert Included (1/8, 3/16, 1/4, 5/16, 3/8')
  • Maximum Operating Temperature of 400°C (752°F)
  • Independent Over- Temperature Cutout

CL-355A Model Options

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Supply Voltage
Process Temperature Unit
Process Temperature Min
Process Temperature Max
Process Temperature Range
Accuracy Value
Communications Protocol
Additional Features

The CL-355A is a small, lightweight, portable dry block calibrator, that offers fast heat-up and cooldown times with excellent performance specifications at a wide operating temperature range. It’s a good choice for standard bench lab work or as a portable field unit. The unit covers the temperature range from 5°C (9ºF) above ambient up to 400°C (752ºF) using a large multi-well machined aluminum insert block as the heat transfer medium to the sensors under test. The CL-355A uses the same aluminum inserts as the CL-740A calibrator. This calibrator is designed to work safely under the following conditions: ambient temperature range: 5 to 40°C (9 to 104°F), up to 95% relative humidity, non-condensing.

Minimum Temperature: 5°C (9°F) above ambient
Maximum Temperature: 400°C (752°F)
Cooling Rate,400 to 100°C(752 to 212ºF): 21 min
Heating Rate, 20 to 400°C(68 to 752ºF): 12 min
Independent Over-Temperature Cutout: 450°C (842ºF) approx.
Fan Cooling: Automatic
Display Resolution: 0.1°
Weight: 4 kg (9 lb)
Insert Immersion Depth: 4.5
Dimensions: 222.25 H x 203.2 W x 203.2 D mm(8.8 x 7.9 x 7.9")
    Stability After 15 Min:: ±0.15°C (±0.27ºF)
    Display Accuracy: : ±0.6°C (±1.1ºF)
Well to Well Uniformity: 0.015 to 0.025°C(32.02 to 32.04ºF)
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Alarm light is illuminated and I cannot get it to turn off. How can I fix this?

Asked by: Anonymous
Thank you for your inquiry. Please contact our Temperature Department for tech support, or send email to
Answered by: Application Engineer JB
Date published: 2020-08-07
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