datel, inc. , mans eld, ma 02048 (usa) ? tel: (508)339-3000, (800)233-2765 fax: (508)339-6356 ? email: sales@datel.com ? internet: www.datel.com datel makes no representation that the use of its products in the circuits described herein, or the use of other technical info rmation contained herein, will not infringe upon existing or future patent rights. the descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. speci cations are s ubject to change without notice. the datel logo is a registered datel, inc. trademark. ?? dms-EB-HTB high-accuracy temperature sensor boards dms-30pc/lcd-0 meters features ds-0399b 03/01 actual size ? accepts inputs from user-supplied solid-state temperature sensors ? available in c or f output readings ? 6-wire screw-type terminal block ? measures temperatures from ?55 to +150c (?67 to +199.9f) ? use with dms-30pc/lcd-0 meters ordering information dms-EB-HTBc high-accuracy temperature probe board, celsius dms-EB-HTBf high-accuracy temperature probe board, fahrenheit dms-bzl1 bezel assembly dms-bzl2 bezel assembly with sealing gasket functional speci cations (t a = 25c, vcc = +5v) order online at www.datel.com description: the dms-EB-HTB application boards accept inputs from user- supplied, ad590 solid-state temperature sensors. the boards can be used with any of datel's ?00mv, 5v-powered dms-30pc/lcd-0 series, 3?digit, led/ lcd display, digital panel voltmeters ?although better performance can be achieved with either lcd or low-power led models. this meter/board combination provides extremely accurate (?.3?) temperature measurements over the range of 55 to +150?(with dms-EB-HTBc) or 67 to +199.9? (dms-EB-HTBf). individual reference-adjust and probe-adjust potentiometers allow for " ne tuning" the ad590 output to precisely match the selected meter. a 6-wire, screw-type terminal block provides for quick, reliable, signal and power connections. calibration: r4 (reference adjust) is factory-calibrated to +459.8mv for ? and +273.2mv for ? (do not readjust). this measurement is taken between tb1 (pin 6) and pin 12 of the dms-30pc/lcd-0. r1 (probe adjust) requires customer adjustment since every sensor has a slightly different zero offset. calibration is simple: connect the sensor leads to tb1 and adjust r1 until the dms-30's display matches a selected reference temperature indicator. figure 1. dms-EB-HTB schematic diagram measurement range: dms-EB-HTBc ?55 to +150c dms-EB-HTBf ?67 to +199.9f sensor type ad590 active linear device accuracy: typical 0.3c (or f) maximum 1.0c (or f) operating voltage range +5v (10%) input current (board only): typical +0.8ma maximum +1.0ma sensor lead length 3 feet, maximum operating temperature range 0 to +60c storage temperature range ?20 to +75c humidity (non-condensing) 0 to 95%, dimensions 2.02" (51.31mm)l 0.83"(21.08mm)w r4 r1 1 12 tb1 1 r2 r6 r5 r3 probe cal. ref. cal u1 (?) input lo (+) input hi ref. out ref. in 12 11 8 7 10 9 tb1 ad590 temperature probe (user supplied) r1 200 dp 3 +5v supply 3 4 5 6 2 1 5v return htbf htbc r2 1.74k 953 r3 6.65k 8.66k r5 4.53k 2.74k probe cal. r2 ref. cal. r3 r5 r4 2k r6 3.9k u1 1.23v ref. 12 5 6 + ? + ? +5v supply 5v return
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