20 to 50°C
Improves accuracy of Fever Detection Systems
Covers 20°C to 50°C with Fast Thermal Response
Check Non-Contact Thermometers
Isotech first introduced the Model 988 to assist in relation to
the SARS outbreak during the early 2000s. It can be used to
increase the accuracy of non-contact fever detection
systems and for checking infrared thermometers. Following
the increased demand in relation to COVID-19, Isotech have
now introduced an updated blackbody source, Model 989.
Model 989 has the same performance as the earlier 988 but
is smaller and has two connectors fitted allowing for easy
mounting. When used in conjunction with IR cameras the
device can easily be suspended from above or below using
standard tripod mounting brackets.
Blackbody Source
Model 989
The upgraded controller can either be locked to a single
temperature or it can be adjusted over a new wider
temperature range of 20°C to 50°C. Model 989 also has a PC
interface fitted as standard. It allows the temperature to be
both monitored and adjusted from a PC.
This blackbody source meets the demand for a simple, cost
effective but high accuracy device for the calibration of
thermal imagers and infrared thermometers that are used at
temperatures around that of the human body.
Unlike heat only devices, this model uses a solid state
thermoelectric heat pump so that the block can be both
cooled and heated. This brings two benefits, the blackbody
can maintain its set point in high ambient temperature
conditions and it can also operate below the ambient
temperature.
Optional
Extension Tubes
http://www.isotechna.com
Response time is very fast, typically less than five
minutes to achieve the required temperature (see
graphs). The Model 989 can be used either
horizontally or vertically.
The device features a high emissivity ridged plate
that is 70mm in diameter. The temperature of the
plate can be set from 20°C to 50°C to a resolution
of 0.01°C.
To reduce sensitivity to air drafts and ambient
temperature effects, a stainless steel tube can be
fitted in front of the plate with evaluation showing
this has advantage over an open plate design.
The longer tube length is 210mm while the
shorter tube length is 40mm long and is
particularly useful for checking medical
thermometers.
For applications where the unit is used at a single
fixed temperature, e.g. 38°C, the set temperature
on the controller can be locked to prevent
accidental change or tampering. The operating
unit can be changed from Celsius to Fahrenheit.
CAL IBR ATION SOLUTIONS MOD EL 989 PRO VIS ION AL DATASHEET - E DIT ION 02
Easy Mount:
camera screw mount
(1/4"-20 UNC thread)
External Thermometer
Reference Pocket
70mm High
Emissivity
Blackbody
Super Stable
Controller
- can be adjusted in
0.01°C steps, and
locked if required
Easy Mount:
camera screw mount
(1/4"-20 UNC thread)
Model
989
Simple Operation:
switch on and within
minutes the 989 is
stable and ready
PC Interface included:
free software to monitor,
optional communications cable
Temperature Range 20°C to 50°C
Resolution ±0.01°C
Target Size 70mm Diameter
using Extension Tube 54mm Diameter
Emissivity 0.97 ±0.02
Combined Accuracy
±0.2°C (0.3°F)
/ Stability
PC Interface Included, RS422
(optional RS232 convertor lead)
Units °C, °F, K
Block Stability <0.01°C
Display Three Colour LCD, Temperature
and Set Temperature
Set Point Lock Set temperature can be locked
and password protected
Automatic Start Up No user intervention required
Set Point Ramp Rate Included: switch on to control
heating and cooling rates
Self Test Automatic - Scrolling text
diagnostic display
Safe low
voltage
operation:
switch mode power
supply included
100-240 Vac input
Dimensions H 200mm (7.87")
W 135mm (5.31")
D 170mm (6.70")
Weight 4kg
How to Order
Model 989 Blackbody Source
Universal voltage input
80-264 V supplied as
standard
Accessories
989/01
RS422 to RS232
Converter Lead
989/02 Isotech 935-14-82
Calibration Probe
989/03 Calibration Kit: Isotech TTI-10
with 935-14-82 Probe and
UKAS System Calibration,
Uncertainty 0.02°C
Power 60 Watts
Voltage 12 Vdc
CAL IBR ATION SOLUTIONS MOD EL 989 PRO VIS ION AL DATASHEET - E DIT ION 02
989/04 Short Tube: 40mm
989/05 Short Tube: 210mm
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