美国DM-1000系列DWYER数显压差表
详细信息
| | 品牌：DWYER/德威尔 | | 型号：DM-1000系列 | | 加工定制：否 | |
| | 精度等级：1% | | | | | |
DM-1000系列数字差压表/风速表是替换模拟机械式差压表及风速表的*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*高/*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
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
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