DM-1000 数显压差计和流量表是替换模拟机械式差压表及风速表的最理想的数字式仪表。同模拟表相比，数字表具有更强大灵活的功能，诸如可以现场编程选择测量压力、风速或流量。此外DM-1000系列数字式差压表还具备一个特性
，因其具有报警设定点，特别适用于有过滤器的应用场合，当过滤器脏了后
，DM-1000将会闪烁报警
，提醒客户需要进行维护等操作。
    对DM-1000系列进行编程


，仅仅需要通过菜单键进入4个醒目的子菜单，通过它们可以设定安全等级
、选择工程单位、更改K系数（当使用不同的皮托管或流量传感器时）、设定圆形或方形管道尺寸（测量体积流量时）、更改过滤器设定点
、查看最高/最低峰值数据
、设定数字阻尼值用来平滑读数（用于读数波动较多的过程应用）
、高级显示模式（用以节省电池），现场校准零点及量程。
    DM-1000系列数字式差压表/风速表，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具有多种供电方式
，可以使用9-24VDC电源模块供电，也可以使用9V电池供电。而当使用电源模块供电且仪表具有9V电池时，电池将起到备份的作用，即当停电时9V电池将自动启动，使仪表继续正常运行。

技术参数 
：

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

产品选型 ：

选项及配件 ：

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