Altek TechChek 820 Multifunction Calibrator, US $450.00 – Picture 0

Altek TechChek 820 Multifunction Calibrator, US $450.00 – Picture 1

Altek TechChek 820 Multifunction Calibrator, US $450.00 – Picture 2

Altek TechChek 820 Multifunction Calibrator, US $450.00 – Picture 3

Altek TechChek 820 Multifunction Calibrator, US $450.00 – Picture 4

Altek Techchek 820 Multifunction Calibrator

US $450.00

Neenah, Wisconsin, United States
Feb 16th

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Up for grabs is a really nice Altek TechChek 820 Multifunction Calibrator. I checked this one out a month ago and it's fully functional and in very good shape. There is a slight chip out of one of the corners, but this is hard to notice and doesn't affect the operation in any way. Thanks! Tony SPECIFICATIONS: ALTEK MODEL# 820 Functions Like a Calibrator: Milliamps, Voltage, RTD, T/C & Frequency Measures Like a Multimeter: AC/DC Volts, Ohms & Continuity Digital Accuracy with Analog Simplicity — Speed sensitive digital pot for fast adjustment. Reads & Sources Standard Process Signals — Deg C & F, mA, % 4 to 20, V, mV, Ohms, Hz & CPM Easy-to-Learn — Easy-to-Use: Simple, Menuless Operation User Settable Quik-Chek Switch — Set any Span and Zero Minimum & Maximum Tracking — Instantly recall Highest and Lowest Measurements (Unless otherwise indicated, specifications are for 1 year in ±% of Span @ 23°C) GENERAL TYPICAL 90 DAY ACCURACY: ±(0.025% of Full Scale + 1 LSD)1 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°±25°C BATTERIES: Six “AA”, (R6) batteries (Alkaline supplied and recommended) BATTERY LIFE: MILLIAMP SOURCE & 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 at approximately 4 hours left OVERLOAD PROTECTION: Three fuses, 250 mA??? NOISE: ?1 LSD at frequencies less than 10 Hz NORMAL MODE REJECTION RATIO: 50 dB @ 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 from 0 to 35°C OVERALL SIZE: 158.1 x 83.1 x 49.3 mm (6.23 x 3.27 x 1.94 inches) WEIGHT: 0.6 kg (1 lb, 5 oz) MILLIAMP SOURCE RANGES: 0.00 to 24.00 mA; -25.0 to 125.0 % of 4 to 20 mA 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 & ACCURACY: Same as for MILLIAMP SOURCE OUTPUT CURRENT: up to 24.00 mA TYPICAL DRIVE CAPABILITY:1200 Ohms @ 20.00 mA COMPLIANCE VOLTAGE: nominal 25 VDC @ 20 mA 2-WIRE TRANSMITTER SIMULATOR RANGES: 1.00 to 24.00 mA; -18.8 to 125.0% of 4 to 20 mA ACCURACY: Same as for MILLIAMP SOURCE LOOP VOLTAGE LIMITS: Mininum, 3 VDC; Maximum 45 VDC OVERLOAD PROTECTION: Current limited to 25 mA nominal MILLIAMP READ RANGES: 0.00 to 24.00 mA; -25.0 to 125.0 % of 4 to 20 mA ACCURACY: Same as for MILLIAMP SOURCE OVERLOAD PROTECTION: Current limited to 25 mA nominal VOLTAGE BURDEN: 0.9V at 4 mA, 1.2V at 20 mA, 1.9V at 24 mA DC VOLTAGE SOURCE RANGES: 0.00 to 110.00 mV; 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: >20 mA SINK CURRENT: >20 mA OUTPUT IMPEDANCE: <0.3 Ohms SHORT CIRCUIT DURATION: Infinite MEASURE DC VOLTS RANGES: 0.00 to 110.00 mV; 0.00 to 10.25 V; 0.0 to 200.0 V ACCURACY: ±(0.05% of 110 mV+ 0.01mV) = ±0.07 mV ±(0.05% of 10.25 V + 0.01V) = ±0.02V ±(2% of 200.0 V + 0.1V) = ±4.1 V INPUT RESISTANCE: >1 Meg Ohm to 10.25V, >5 Meg Ohm to 200V SOURCE RESISTANCE EFFECT: 0.01% per 100 Ohms MEASURE AC VOLTS RANGE: 0.0 to 250.0 V True RMS ACCURACY: From 10 to 250 VAC ±(2% of 250.0 VAC + 0.1 VAC) = ±5.1 VAC MAXIMUM CREST FACTOR: < 3 FREQUENCY RANGE: 45 to 800 Hz SOURCE THERMOCOUPLES RANGES: Type J -100 to 1200°C; -148 to 2192°F Type K -100 to 1371°C; -148 to 2500°F Type T -100 to 400°C; -148 to 752°F Type E -100 to 1000°C; -148 to 1832°F ACCURACY: 1°C for temperatures above 0°C 2°C for temperatures below 0°C COLD JUNCTION ACCURACY: ±1°C COLD JUNCTION EFFECT: within 0.05°C per °C change OVERLOAD PROTECTION: Fused OUTPUT IMPEDANCE: <0.3 Ohms SOURCE CURRENT: :>20 mA READ THERMOCOUPLES RANGES & ACCURACY: Same as for SOURCE THERMOCOUPLES INPUT IMPEDANCE: > 1 Meg Ohm OPEN THERMOCOUPLE DETECTION: 450 millisecond pulse. Nominal threshold, 10 K Ohms. SOURCE RTD & OHMS RANGE OHMS: 0.0 to 400.0 Ohms ACCURACY: ±0.05% of Full Scale + 0.075 mV/mA Excitation Current ACCURACY OHMS: ±(0.05% of 400.0 Ohms + 0.1 Ohm = ±0.3 Ohms RTD Type: Pt 100 Ohm DIN/IEC 751, Alpha = 1.3850 (0.00385) RANGE RTD: -100 to 850°C; -148 to 1562°F ACCURACY RTD: ±1°C TEMPERATURE EFFECT: ±((0.035 mV/°C)*(1/mA Excitation Current)) ALLOWABLE EXCITATION CURRENT: 0.125 to 2.0 mA continuous DC READ RTD & OHMS RANGE OHMS: 0.0 to 1000.0 Ohms ACCURACY: ±(0.05% of 1000.0 Ohms + 0.1 Ohm) = ±0.6 Ohms RTD RANGE & ACCURACY: Same as for SOURCE RTDs EXCITATION CURRENT SUPPLIED: 1 mA, nominal FREQUENCY SOURCE RANGES: 1 to 1000 CPM (Count-Per-Minute); 1 to 1000 Hz, 0.01 to 10.00 kHz ACCURACY: ±(0.05% of 1000 CPM + 1 CPM) = ±2 CPM ±(0.05% of 1000 Hz + 1 Hz) = ±2 Hz ±(0.05% of 10.00 kHz + 0.01 kHz) = ±0.02 kHz OUTPUT WAVEFORM: Square Wave, Zero Crossing, -1V to +5V ±10% RISETIME: Hz <5 microseconds; CPM <100 microseconds OUTPUT IMPEDANCE: <100 Ohms SOURCE CURRENT: >1 mA at 10 kHz SHORT CIRCUIT DURATION: Infinite MEASURE FREQUENCY RANGES & ACCURACY: Same as for FREQUENCY SOURCE TRIGGER LEVEL: 1 V RMS, DC coupled INPUT IMPEDANCE: > 1Meg Ohm + 60 pF CONTINUITY CHECKING TEST CURRENT: Nominal 1 mA THRESHOLD: 100 Ohm ±20% INDICATION: Steady tone & Symbol on LCD plus Ohm Reading