AC2626 AD | Alldatasheet
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ANALOG DEVICES FAX-ON-DENAND HOTLINE - Page 2 > DEVICES General Purpose Temperature Probe
FEATURES
Linear Current Output: 1ZA/K Wide Range: -55°C to +150°C Laser Trimmed Sensor (AD590) to +1.0°C Calibration ‘Accuracy (AC2626L) Exceltent Linearity: 20.4°C Over Full Range (AC2626L) 6 Inch or 4 Inch Standard, Stainless Stee! Sheath Sap: 3/16 Inch in Outside Diameter P
3 Fest Tefion Coated Lead Wire
Wide Power Supply Range +4V to +30V ° — | Low Cost 2 set iaeayei Pets Fast Response: 2 Seconds (In Stirred Water) . “ Sensor Isolated From Sheath ~jieeee " PRODUCT DESCRIPTION and the AD2040, low cost temperature indicator, were designed The AC2626 is a stainless steel tubular probe measuring 3/16 to be used in conjunction with the AC2626. inch (4.76mm) in outside diameter and is available in 6 inch 1. The AD2038 is a low cost, ac line powered 6 channel digital (152.4mm) or 4-inch (101.6mm) lengths. The probe is avail- scanning thermometer designed to interface co printers, ‘The probe is designed for both liquid and gaseous immersion trol, logging or transmission of multi-point temperature applications as well as temperature measurements in refrigera- data. Channel selection is made via three methods: manual, tion or any general temperature monitoring application. using the switch provided on the front; auto/scan, where . the AD2038 cycling on an internal clock can continually For taking measurements in pipes or other closed vessels, the scan the six input channels or external sclection, where con- Acie compression fing is available. The C2629 may be trol inputs provided on the cear connector enable channel applied anywhere along the probe and is supplied in two ma~ ‘ wes, The low cost AC2629B i constructed of brass and the selection via external BCD coding. i higher priced AC2629SS is made of stainless steel 2. ap2#0 isalow costs 3 be temperature indicator. n internal precision voltage reference, resistor networ PRODUCT HIGHLIGHTS and span and zero adjusts Silow the AD2040 to read out The AC2626 is based on the ADS90 temperature transducer, dircetly in °C, °F, K or R. User selectable readout as well ‘a two terminal integrated circuit which produces an output as all other connections, ie., +5V de power and AC2626 current linearly proportional to absolute temperature interface are all made via the terminal block on the reat. Costly linearization circuitry, precision voltage amplifiers, APPLICATION HINTS resistance measuring circuitry and cold junction compensation 1. Under all operating conditions, a minimum 4V dc must be are not needed in applying the AC2626. present across the AC2626. Due tw the high impedance current output of the AD590, the >Use of twisted pair wiring is recommended, particularly ‘AC2626 is particularly useful in remote sensing applications, for remote applications or in high noise environments. because of its insensitivity to voltage drops over lines. The out- Shielded wite is desirable in severe noise environments. put characteristics also make the AC2626 easy to multiplex. 4. For the lowest com the J and K are recommended In addition to temperature measurement, applications include ” Where probe interchangeability is desired, grade L is temperature compensation, biasing proportional to absolute recommended. temperature, flow rate measurement, level detection of fluids and anemometry. DIRECT INTERFACE PRODUCTS For display and/or control applications, two companion prod- ucts are available. The AD2038, 6 channel digital thermometer, -1-
ANALOG DEVICES FAX-ON-DEMAND HOTLINE - Page 3 AC2626—SPECIFICATIONS ayes c +25 au +57 mies ones spect Salt ttn ISOS ERROR MODEL, ‘AC2626) ——-ACI626K—AC2626L_—AC2EIEM MECHANICAL OUTLINE ABSOLUTE MAXIMUM RATINGS' Dimensions shown in inches and (mm). Forward Voltage (V5) way : : . Reverse Voltage (Vs) “tov : : : AC2626 Breakdown Volage (Case to Leads) #2000 . . . ve sranqase eves. Tuamc, Rated Performance Temp. Range “88°C s180°C * : . ae NBME enmatir comovers ronT Storage Temperature Range 60°C to +160°C_* . . Bry imma am POWER SUPPLY L TEFLON WRATED Operating Voltage Range s4vi0r30V¢ . . ——— Operating Vonage Rane EE " "mace ‘OUTPUT Th | Nominal Geren Output @ +25°C eure Nominal Temperature Coefficient ture . . . AC2629 Calibration Error @ +23°C 15.0°C max 425°C max #1.0°C max 205°C max STAML CNS BTERL Tire 310 ‘Absolute Error (over rated performance ‘Comme sevon 11Tre irom 3) ‘temperature range) mammsoe | Without Fxternal Calibration Ost i Adjustment £10.0°C max 958°C max 13.0°C max £1.7°C max aa} anet] i rH i rm —! sie me With #25°C Calibration Error ob aH sail its Set 10 Zero +43.0°C max 220°C max 21.6°C max *1.0°C max Noolinesrity 315°Cmax 208°C max 204°C max 20.3°C mix Le sner Repestabliy? ore . : : an Long Term Drift? 0.1°C max/month * : ‘ Time Constant’ (in stirred water) Dee. . . . MOTE 1 Probes ae preblem inch or Bunch ong Current Noise 4opaviie . . . WOTE2 teed wren etoteoe: yl; era he romvene. _ Osea . . . pales aer corte ta sSVEVgS+15V O.WAV : . : +1SVEV5<+30V O.WAV : : : Electsical Turn-On Time 20us . . . + Lead Cotor yellow orange blue green ORDERING GUIDE ‘AC2626 GRADE J kK} — ENTER L LENGTH Pa] _ enter AC2629 5 BRASS B . TYPE 316 } ENTER STAINLESS wore "Maxum safe recommended pressure: 7300pH (9.17 X 10" Kps). "aca vin Bewen °9°C eng ae emper eing ee <38°C and + 150°C; guarsnted, not vested. “Conditions: comuant “SV, conant #125°C;gusrantced, ot vesed. “The ome consiant defied a de Gan requited to reach 63,29 ofan instantuacous temperature change, *Speciticauoas same w AC2O2A) Sperifcations ject ta change without notice. CALIBRATION g™ ACZEZB ——o iAcK Yo AT = 1000 FOR °C AT = 2000 FOR 'F fos C= 273.20V °F 24888 R= 9630 FOR *C f= 17400 FOR "F For most applications, a ingle point calibration is ‘wtfictent. With the probe at 8 known temperature, ‘adjust Ry 20 thet Vo eorresponds to the known ernpernture. Wt more derailed information i desired, wee the ‘ADE00 deta sheet and application nots.