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Electronic Temperature Measurement
Digital Temperature Indicators
820/821 SERIES
• Large 4-digit LED display
• Field re-programmable with optional PC interface module and software
• Software includes a security feature to prevent accidental re-programming
• 4 mA to 20 mA programmable linearized output signal
• Utilizes a self-calibration feature for accurate and stable performance
• Optional fully programmable switch output; relay or transistor
• Utilizes a PT100 Ω RTD Class A element for temperature sensing
• M12 x 1 (5-pin) plug or 36” integral cable electrical connection
• IP 65 / NEMA 4 rated environmental protection
• All 316 Stainless Steel construction
• Easy installation with various mounting confi gurations
Tem pera ture ran ges Standard ranges from -325 °F to 1,100 °F (-200 °C to
Tem pera ture sensor RTD (PT100 DIN EN 60751, Class A)
Housing material 316 Stainless Steel
Probe material 316 Stainless Steel standard
Maximum pressure 500 psig (on probe )
Power requirement 9-36 Vdc, polarity protected
Supply effect 0.005%/ V
Power consumption 15 mA @ 24 Vdc + output current – 950 mW max.
APPLICATIONS
Replacement for bimetal, liquid bulb and
glass thermometers
Pharmaceutical
Food preparation
Utilities and municipal refineries
Chemical and petrochemical plants
Paper mills
Hydraulics
Thermowells are recommended for pressure, corrosive fl uids
and high velocity applications, see pages 46-48.
Current output 4 mA to 20 mA (3-wire confi guration) linear to temperature
Max load on current output (Vsupply-9V ) / 20 mA, Ω
Optional switching output Relay SPDT 0.5A @ 240 Vac or
Optional switching logic N.C. or N.O. software selectable
Optional switching ranges Customer programmable between -325 °F to 1,100 °F
Isolation 500 Vdc input /output (between probe and output signal )
Electrical connection M12 x 1 (5-pin) or integral cable
Hysteresis 1% of range standard; customer programmable optional
Accuracy ≤0.22% full scale; ≤0.1% full scale optional
Open circuit detection Upscale (22 mA) or downscale (2.5 mA) current output.
Warm-up 30 seconds
Response time 0.5 sec to 30 sec ( software selectable )
Display 4-digit LED, decimal point selectable by software
Display resolution ±0.02% F.S. ±1 digit
RFI effect 1% or less typical
Tem pera ture ran ges Ambient -40 ºF to 176 ºF (-40 ºC to 80 ºC)
Environmental protection NEMA 4/ IP 65
WARNING: This product can expose you to chemicals including Chromium (VI) and Nickel, which are known to the State of
California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
SPECIFICATIONS
600 °C) Customer rescalable with optional PC interface
and software
20 mA @ 24 Vdc for PNP output – 500 mW max.
20 mA @ 24 Vdc + sourcing current for NPN output
50 mA @ 24 Vdc for relay output – 1200 mW max.
Transistor NPN (max 100 mA source ) or
Transistor PNP (max 100 mA sink)
(-200 °C to 600 °C)
Error message on LED display
Effect <0.01% FS/ ºC
Storage -58 ºF to 185 ºF (-50 ºC to 85 ºC)
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ORDERING
INFORMATION
820/821 SERIES
ORDERING INFORMATION
SERIES 820 Bottom connection 821 Back connection
ACCURACY 1 ≤0.22% full scale 2 ≤0.1% full scale
OUTPUT 1 4 mA to 20 mA
BURNOUT U Upscale D Downscale
PROCESS CONNECTIONS 0 None 8 1/2" NPT Male
2 1/4" NPT Male 48 1/2" NPT Male w/sliding compression fitting*
TEMPERATURE RANGES -50/120 -50 °F to 120 °F -50/400 -50 °F to 400 °F 32/200 32 °F to 200 °F 32/400 32 °F to 400 °F
-50/300 -50 °F to 300 °F 32/120 32 °F to 120 °F 32/300 32 °F to 300 °F
ELECTRICAL CONNECTIONS 36 Integral cable 36" 48 M12 x 1 (5-pin)
STEM LENGTHS 025 2.5" 060 6" 120 12" 180 18"
040 4" 090 9" 150 15" 240 24"
STEM DIAMETERS 2 1/4" 3 3/8" 4 1/2" 6 6 mm
Please consult your local NOSHOK Distributor or NOSHOK, Inc. for availability and delivery information.
* Add 2" to stem length for this option.
DIMENSIONS
M12
connector
EXAMPLE
820 – 1 – 1 – D – 8 – 32/200 – 48 – 090 – 6
Series ............................................820 Bottom connection
Accuracy ................................................ ≤0.22% full scale
Output ........................................................4 mA to 20 mA
Burnout ............................................................ Downscale
Process connection ...................................1/2" NPT Male
Temperature range .................................. 32 °F to 200 °F
Electrical connection................................ M12 x 1 (5-pin)
Stem length ....................................................................9 "
Stem diameter ..........................................................6 mm
820 Series 821 Series
1.799"
(45.7 mm)
Ø 3.000"
(76.2 mm)
M12
connector
1.799"
(45.7 mm)
1.201"
(30.5 mm)
Stem diameter
as specifi ed
Stem
length as
specifi ed
Stem
diameter
as specifi ed
Stem length as specifi ed
Ø 3.000"
(76.2 mm)
1.201"
(30.5 mm)
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