DM-1000 數(shù)顯壓差計和流量表是替換模擬機(jī)械式差壓表及風(fēng)速表的的數(shù)字式儀表。同模擬表相比，數(shù)字表具有更強(qiáng)大靈活的功能，諸如可以現(xiàn)場編程選擇測量壓力、風(fēng)速或流量。此外DM-1000系列數(shù)字式差壓表還具備一個特性，因其具有報警設(shè)定點，特別適用于有過濾器的應(yīng)用場合，當(dāng)過濾器臟了后，DM-1000將會閃爍報警，提醒客戶需要進(jìn)行維護(hù)等操作。
對DM-1000系列進(jìn)行編程，僅僅需要通過菜單鍵進(jìn)入4個醒目的子菜單，通過它們可以設(shè)定安全等級、選擇工程單位、更改K系數(shù)（當(dāng)使用不同的皮托管或流量傳感器時）、設(shè)定圓形或方形管道尺寸（測量體積流量時）、更改過濾器設(shè)定點、查看/峰值數(shù)據(jù)、設(shè)定數(shù)字阻尼值用來平滑讀數(shù)（用于讀數(shù)波動較多的過程應(yīng)用）、高級顯示模式（用以節(jié)省電池），現(xiàn)場校準(zhǔn)零點及量程。
DM-1000系列數(shù)字式差壓表/風(fēng)速表，具有1%FS的精度（量程大于2? W.C）及2%精度（量程0.25? W.C到1? W.C）。DM-1000具有多種供電方式，可以使用9-24VDC電源模塊供電，也可以使用9V電池供電。而當(dāng)使用電源模塊供電且儀表具有9V電池時，電池將起到備份的作用，即當(dāng)停電時9V電池將自動啟動，使儀表繼續(xù)正常運(yùn)行。
技術(shù)參數(shù) ：
Service: Air and non-combustible, compatible gases.
Wetted Materials: Consult factory.
Housing Materials: Glass filled plastic.
Accuracy: ±1% FS including linearity, hysteresis and repeatability; ±2% FS for
ranges 1 in w.c. and below.
Temperature Limits: 0 to 140°F (-18 to 60°C).
Compensated Temperature Limits: 32 to 122°F (0 to 50°C).
Long Term Stability: ±1% FS per year.
Thermal Effect: ±0.05% FS/°F typ.; ±0.10% FS/°F for ranges 1 in w.c. and below.
Display: 4-digit LCD?(digits:?0.60H x 0.33W).
Display Update: Selectable for 1 second to 10 minutes or update only from button
push.
Pressure Limits: Normal and bi-directional ranges 5 in w.c. and lower = 2 psi
(13.7 kPa); Normal and bi-directional ranges 10 in w.c. and higher = 11 psi (75
KPa).
Selectable Engineering Units: in w.c., psi, kPa, Pa, mm w.c., mBar, in Hg, mm
Hg, FS?(0-99%).
Power Requirements: 9 V alkaline battery, included, user replaceable or external
power supply 9-24 VDC.
Battery Service Life: Battery life depending on the display update setting: 150
hours (typical) if display update = 1 second; 9 month (typical) if display update =
10 minutes; 1.5 years (typical) if display update is disabled. Battery may last up to
four times longer when using lithium-based battery ULTRALIFE U9VL-J.
Current Consumption: 5 mA max.
Electrical Connections: Removable terminal block for 16 to 26 AWG.
Electrical Entry: Cable glａnd for 0.114 to 0.250? (2.9 to 6.4 mm)?diameter cable.
Process Connections:?1/8? (3 mm) ID tubing.
Enclosure Rating: NEMA 4X (IP66).
Weight: 1.18 lb?(535 g).
Size: 5? (127 mm) OD front face.
Agency Approvals: CE
產(chǎn)品選型 ：
選項及配件 ：
A-299, Surface Mounting Bracket
A-300, Flat Flush Mounting Bracket
A-286, 4-1/2? Gage Panel Mounting Flange
A-489, 4? Straight Static Pressure Tip with Flange
A-480, Plastic Static Pressure Tip
