Dwyer DM-1000 數顯壓差計(jì)/流量表

    DM-1000 數顯壓差計(jì)和(hé)流量表是替換模拟機械式差壓表及風(fēng)速表的最理(lǐ)想的數字式儀表。同模拟表相比，數字表具有更強大(dà)靈活的功能(néng)，諸如可以現(xiàn)場編程選擇測量壓力、風(fēng)速或流量。此外(wài)DM-1000系列數字式差壓表還具備一個特性，因其具有報(bào)警設定點，特别适用(yòng)于有過濾器的應用(yòng)場合，當過濾器髒了(le)後，DM-1000将會(huì)閃爍報(bào)警，提醒客戶需要進行維護等操作(zuò)。
    對(duì)DM-1000系列進行編程，僅僅需要通過菜單鍵進入4個醒目的子菜單，通過它們可以設定安全等級、選擇工(gōng)程單位、更改K系數（當使用(yòng)不同的皮托管或流量傳感器時(shí)）、設定圓形或方形管道(dào)尺寸（測量體積流量時(shí)）、更改過濾器設定點、查看(kàn)最高(gāo)/最低(dī)峰值數據、設定數字阻尼值用(yòng)來(lái)平滑讀數（用(yòng)于讀數波動較多的過程應用(yòng)）、高(gāo)級顯示模式（用(yòng)以節省電池），現(xiàn)場校準零點及量程。
    DM-1000系列數字式差壓表/風(fēng)速表，具有1%FS的精度（量程大(dà)于2? W.C）及2%精度（量程0.25? W.C到(dào)1? W.C）。DM-1000具有多種供電方式，可以使用(yòng)9-24VDC電源模塊供電，也(yě)可以使用(yòng)9V電池供電。而當使用(yòng)電源模塊供電且儀表具有9V電池時(shí)，電池将起到(dào)備份的作(zuò)用(yòng)，即當停電時(shí)9V電池将自(zì)動啓動，使儀表繼續正常運行。

技術參數 ：

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?(0-100%).
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

産品選型 ：

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