Dp Engineers

Pandav Nagar, Delhi

model 670 fume hood monitor

ensures proper fume hood performance

the model 670 fume hood monitor continuously senses air flow through the face of the fume hood, ensuring safe levels of fresh air are exhausting. The 670 provides a highly accurate hot wire sensor to detect very low flows common on fume hoods. The model 670 comes with everything required to quickly install the unit including a mounting bracket, 24" of tubing for connecting to the inside of the hood wall and a 120 volt ac power adapter.

product applications

fume hood ventilation monitoring

modeldescription

670fume hood monitor.

specifications

service:fume hood face velocity air flow.

alarm range:30-400 fpm (0.15-2.0 m/s).

alarm indication:red led & audible alarm.

low air velocity alarm delay:fixed 5 secs.

visual led display:red: alarm; green: normal.

horn silence:yes, temporary and permanent.

accuracy:face velocity 10%.

temperature limits:operating temperature: 55 to 86f (13 to 30c). Storage temperature: -40 to 150f (-40 to 65c).

power requirement:15 vdc 500 ma; 120 vac, 60 hz power transformer included.

relay output low air flow alarm:5 a @ 250 vac.

relay input for night setback:2 wire rated for 24 vdc usage.

sash high indication:using a two wire micro switch or 3 wire proximity switch input, rated for 24 vdc usage.

mounting:semi flush, flush or surface mounted when using included bracket.

weight:5.0 oz (141 g).

agency approval:ce.

features

flexible surface or flush mounting

led safe and alarm status indicators

audible alarm

sash alarm input

night set-back input

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Condition : New

Brand Name : DWYER USA

Voltage : 60 Hz Power Transformer Included.

Features : High Speed, Low Consumption

Type : Model 670 Fume Hood Monitor

Warranty : 1year

Color : Cream

Application : Fume Hood Face Velocity Air Flow.

Model 660 Air Velocity Monitor

continuously measures fume hood airflow

model 660 air velocity monitors are a practical, affordable way to continuously monitor for safe air flows through laboratory fume hoods. They are typically installed in the fume hood side fascia and connected to the interior sidewall via 1-18" flexible tubing. As the exhaust fan draws air through the device, a sensitive constant temperature thermistor measures flow and lights a green (normal), yellow (high) or red (low) led. An audible alarm also warns of low flow and requires manual resetting. Mounting holes fit standard single gang electrical box.

product applications : warns user if insufficient fume hood face velocity is encountered.

specifications

service:air and non-combustible, non-corrosive gases.

high setpoint range:0-275 fpm (0-1.397 m/s).

low setpoint range:0-150 fpm (0-.792 m/s).

repeatability:7% of full span, 0-50 and 150-275 fpm; 5% of full span, 50-150 fpm.

compensated temperature range:50 to 90f (10 to 32.2c).

operating temperature range:32 to 120f (0 to 48.9c).

power supply:24 vac, 3 watts maximum.

response time:6-10 seconds.

warm-up time:3-5 minutes (no flow).

audible alarm:75 db between 3-10 feet.

weight:3 oz (85 g).

mounting hardware:(2) #6 x 1" sheet metal screws, (2) 6-32 x 7/8" machine screws.

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Warrenty : 1 Year

Type : Air Velocity Meter

Color : Grey

Brand Name : DWYER USA

Certificate : YES

Usage : Industrial, Non-corrosive Gases.

Size : Standard

Power : 24 VAC, 3 Watts Maximum.

Voltage : 3 Watts Maximum.

Particulate Monitor (Series DPM)

series dpm particulate monitor

real-time leak gauge, adjustable alarm points

the dpm particulate monitor and pms particulate sensor combine to provide a basic baghouse and cartridge filter leak detector designed for general maintenance planning and process protection. It is easy to use and reliable. Leakage is gaged in real-time, on-the-spot, without prior baseline data and without signal tuning. Simply apply power and the general condition of the filter is quickly determined. An alarm point is set by simply moving an indicator up and down the gage with the convenient, lockable key pad. For more precise alarm setup the large display provides both a logarithmic analog bar graph and an absolute digital readout. The log scale enables the user to observe both the baseline bleed through and the high peaks that are caused by filter cleaning cycles and developing leaks. Observation of both baseline and peaks is essential to setting proper alarms. The digital readout in absolute units ensures correct interpretation of the readings and provides accurate historical comparisons.

the dpm particulate monitor is housed in a rugged cast aluminum enclosure. An lcd displays particulate levels in bar-graph and digital forms. A lockable membrane keypad is provided for setup and adjustment.

product applications

baghouses

cartridge filters

bin vents

specifications

inputs:from pms sensor.

output ratings:alarm relays: 2 form a (spst) rated 5a @ 240v res. (must provide an 8a [maximum] fuse in series with relay load); analog: 4 to 20 ma (option rc).

power requirements:115 vac 50/60 hz, 230 vac 50/60 hz, or 24 vdc.

power consumption:6 watts max.

accuracy:standard: 5% of range; optional: 1% of range.

display:lcd.display resolution:standard: 5 pa; optional: 0.5 pa.

memory backup:for set point storage only.

temperature limits:-13 to 160f (-25 to 70c).

weight:4.5 lbs (2.0 kg).

enclosure:cast aluminum, weatherproof, nema 4x.

loop power supply (isolated):17 vdc loop supply provided by dpm control unit for pms sensor.

agency approvals:ce, csa.*

*dpm models listed intrinsically safe are to be used with corresponding intrinsically safe pms models making an intrinsically safe control loop. The pms model can then be installed in a hazardous location according to approval ratings listed. The dpm itself is not intrinsically safe and must be installed outside the hazardous location.

features

rugged cast aluminum housing with lockable membrane keypad

programmable alarm points

large lcd to display readouts digitally

options

-rc analog output (4-20 ma)

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Power : Or 24 VDC.

Color : Grey

Condition : New

Display Type : Digital, LCD-Standard: 5 PA; Optional: 0.5 PA.

Weight : 4.5 Lbs (2.0 Kg).

Operating Temperature : -13 To 160F (-25 To 70C).

Power Source : Or 24 VDC.

Application : Bin Vents

Warranty : 1 Yr