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Altek 820 Multifunction Process Calibrator
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Altek 820 Multifunction Process Calibrator



Altek 820
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 Altek 820

Features:
  • Functions Like a Calibrator — Milliamps, Voltage, RTD, T/C & Frequency.
  • Measures Like a Multimeter — Measure AC/DC Volts, Ohms & Continuity.
  • Digital Accuracy with Analog Simplicity — Speed sensitive digital pot for fast adjustment.
  • Typical Accuracy to ±0.025% — Accurate to 0.02 mA, V or Hz, 1¡C, & 0.3 Ohms.
  • Reads & Sources Standard Process Signals — ¡C, ¡F, mA, % 4 to 20, V, mV, Ohms, Hz & CPM.
  • Easy-to-Use — Simple, menuless operation.
  • User Settable Quik-Chek Switch — Set any Span and Zero.
  • Minimum & Maximum Tracking — Instantly recall the highest & lowest measurements.
  • Standard AA Alkaline Batteries — Long battery life with quick battery changes.
  • Deluxe Accessories Set Included — Carrying case with neck strap for hands-free viewing plus detachable leads, alligator clips, test probes & spade lugs.
Additional Photos
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  Description

Lighten your load by taking the TechChek to every site. It’s like bringing a cartload of test equipment from the shop to the control room or the field. The TechChek 820 sources & reads DC like a milliamp or voltage calibrator, simulates and measures T/Cs & RTDs like a temperature calibrator and generates and counts frequency & Counts-Per-Minute like a frequency calibrator. Your TechChek can also help you trouble shoot like a multimeter! It checks continuity and measures AC line voltage without carrying a seperate instrument. The TechChek 820 is easy to use. Select a function, choose a range, and turn the knob for the precise output you need. Plus, you can store three output values per range for instant recall with the QUIK-CHEK® switch.

Use at every point in your 4 to 20 mA loop. You can Source & Read 0.00 to 24.00 mA, Simulate a Two-Wire Transmitter or the use the TechChek 820 to simultaneously Power & Measure your Two-Wire Transmitters.

Calibrate all your DC millivolt and voltage instrumentation. Source from 0.00 to 110.00 mV and 0.00 to 10.25 V. Read up to 110.00 mV, 11.00 V and 200.0 VDC.

Source and read directly in °C and °F for T/C types J, K, T & E with 1° resolution. Cold junction compensation automatically adjusts for ambient temperature changes.

Built-in Platinum 100 Ohm DIN/IEC 751 table displays in °C or °F. No more decade box and hard-to-read tables. Also reads and sources in Ohms.

Generate Zero Crossing square waves from 1 to 1000 Hz, 0.01 to 10.00 kHz and from 1 to 1000 CPM (Counts-Per-Minute). Also measures as a frequency counter.





  Models, Options, & Accessories


Model Description List Price Sale Price
820 Process Calibrator TechChek 820 $1749.00
$1556.61 



  Specifications

Milliamp Source  
Ranges: 0.000 to 24.000mA; -25.00 to 125.00% of 4 to 20mA
Accuracy: ±(0.05% of 24 mA Span + 0.01 mA) = 0.02mA
Typical Drive Capability: 1200 Ohms @ 20.00 mA
Compliance Voltage: Nominal 25 V @ 20 mA
Power & Measure 2-wire Transmitters  
Ranges: 0.000 to 24.000mA; -25.00 to 125.00% of 4 to 20mA
Accuracy: ±(0.05% of 24 mA Span + 0.01 mA) = 0.02mA
Output Current: Up to 24.00 mA
Typical Drive Capability: 1200 Ohms @ 20.00 mA
Compliance Voltage: Nominal 25 VDC @ 20mA
2-wire Transmitter Simulator  
Ranges: 1.000 to 24.000mA; -18.8 to 125.00% of 4 to 20mA
Accuracy: ±(0.05% of 24 mA Span + 0.01 mA) = 0.02mA
Loop Voltage Limits: Minimum: 3 VDC
Maximum: 45 VDC
Overload Protection: Current limited to 25 mA nominal
Voltage Burden: 0.9V at mA, 1.2V at 20mA, 1.9V at 24mA
Milliamps Read  
Ranges: 0.000 to 24.000mA; -18.8 to 125.00% of 4-20mA
Accuracy: ±(0.05% of 24 mA Span + 0.01 mA) = 0.02mA
Overload Protection: Current limited to 25 mA nominal
Voltage Burden: 0.9V at 4 mA, 1.2V at 20 mA, 1.4V at 24 mA
DC Voltage Source  
Ranges: 0.000 to 110.000mV
0.00 to 10.25V
Accuracy: ±(0.05% of 110 mV+ 0.01mV) = ±0.07 mV
±(0.05% of 10.25 V + 0.01V) = ±0.02V
Source Current: >20mA
Sink Current: >20mA
Output Impedance: Greater than 0.3 Ohms
Short Circuit Duration: Infinite
Measure AC Volts  
Ranges: 0.0 to 250.0V True RMS
Accuracy: From 10 to 250 VAC ±(2% of 250V + 0.1 VAC) = ±5.1VAC
Maximum Crest Factor: Greater than 3
Frequency Range: 45 to 800 Hz
General  
Typical 90 day Accuracy: ±(0.025% of Full Scale + 1 LSD)
1 Year Accuracy: ±(0.05% of Full Scale + 1 LSD)
Warm up Time: 10 Seconds to specified accuracy, 2 minutes to maximum accuracy
Temperature Effect: ±0.01%/°C based on 23°C ±25°C
Batteries: Six "AA" (R6) batteries (Alkaline supplied and recommended)
Battery Life: Milliamp Source and 2-wire Modes: Nominal 50 hours at 12 mA, 20 hours at 20 mA with 250 ohm load
Other Functions: Nominal 50 hours
Low Battery Indication: "BAT" indication on the display, approximately 4 hours left
Overload Protection: Three fuses, 250 mA
Noise: =1 LSD at frequencies less than 10 Hz
Normal Mode Rejection Ratio: 50dB @ 50/60 Hz
Operating Temperature Range: -5 to +130 °F (-20 to +55°C)
Storage Temperature Range: -13 to +130 °F (-25 to +55°C)
Relative Humidity: 10 to 90%, non-condensing for 24 hours
Dimensions: 158.1mm (6.23 in) x 83.1mm (3.27 in) x 49.3mm (1.94 in)
Weight: 1lb 5oz (0.6kg)



   
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