INTRINSICALLY SAFE DRUM LEVEL ALARM monitors high liquid level by beeping and flashing. 

IS-DHPX-PP
INTRINSICALLY SAFE TANK ALARM
ENCLOSURE FRONT

Better Level Control

  • Always on duty because battery power is uninterruptible.

  • Replaceable Lithium battery lasts for years.

  • Loud buzzer is 101dB @ 2 ft. (like a smoke alarm)

  • Rugged. Built for rough, wet and corrosive environments.

  • Low battery alert.
  • Optional relay output.

     

  • Class 1, Div. 1. Gas groups C and/or D. 60079-0 and 60079-11.
OPERATION

When there is a high or low level condition, the buzzer sounds and the beacon LED will flash. In the default mode, the user presses the button to silence the buzzer, and the LED continues to flash as a reminder. The 101 dB buzzer has a unique warbling sound cuts through factory noise so it will be heard.

Easy to Install. Different mountings are all adjustable by hand. Simply loosen the nut or thumbscrew and slide the alarm to the depth you want. Other mounting hardware available if needed.

Different behaviors are field-selectable using DIP switches on the circuit board. Choose from:

  • 30-minute snooze alarm, (on/off)
  • (auto or manual) reset after level corrected
  • optional relay (N.O./N.C.), can be delayed or immediate.
CONSTRUCTION

Battery Power is uninterruptible and allows installation anywhere. No outlets, electricians, or inspectors needed. The Lithium batteries included and have a shelf life of 20 years. A 2400mA-hr capacity combined with smart software allows these to sound for 25 days straight!  In typical situations the batteries will last for many years. When the batteries do run low, a unique low-battery signal is given. (different from the level alarm signals) Batteries are user-replaceable in the hazardous location.

Durable construction from an aluminum electronics enclosure. Lexan LED lens, metal pushbutton.  Polypropylene pipe and PTFE float switch.
Float guard protects the float switch so it can be moved from drum-to-drum without worrying about damage to the float.

Harsh Weather rated temperature range is +60ºC to -40º C. [140ºF to -40ºF]

MODELS

IS-DHK models have no liquid feed pipe to allow them to fit into a 3/4″ drum bung.

IS-DHK-SS  has a 316 Stainless Steel pipe and float. The diameter of the SS float is 22mm so it is not possible to surround the float with a float guard.  chemical compatibility chart here

IS-DHK-SB  has a SS pipe and BUNA float switch, protected with a SS float guard.  BUNA rubber is compatible with most oils, non-aromatic hydrocarbons and fuels.  chemical compatibility chart here

IS-DHK-PP  has a Polypropylene pipe and float switch.  Protective float guard included.  chemical compatibility chart here

Models including a liquid feed pipe have two mounting styles, either with slip-on cap or threaded drum plug.

IS-DHA has a slip-on PVC cap which is the easiest to transfer from drum-to-drum as it simply lifts off the top of the drum.

IS-DHP has a 2 inch NPS threaded plastic drum plug which is a more secure mount. 

Both of these models are available in PP, SS or PVDF.

 

IS-DHK-SB
IS-DHK-SS
High level drum alarm
IS-DHK-PP
IS-DHPX-PP FRONT
  • Enclosure material………………………….. Aluminum
  • Buzzer volume…………………………………101dB @ 2ft.
  • Battery capacity………………………………. 2400 mA-hr
  • Operating temp………………………………. -40 to 60ºC (-76-140ºF)
  • Ingress protection……………………………. IP65
  • Lens material……………………………………Lexan
  • Stainless steel…………………………………..316 except retaining rings are type PH 15-7 Mo
  • Current consumption during alarm…..30mA
  • Relay current…………………………………….80mA max.
  • Battery chemistry……………………………..Lithium Thionyl Chloride
  • Battery pack voltage…………………………7.2VDC
  • Lithium weight…………………………………1.2g (per pack)
  • Float switch S.G. (SS)………………………… 0.73
  • Float switch S.G. (BUNA)…………………….0.50
  • Float switch S.G. (polypropylene)……….0.60

CSA has certified this unit to the following standards:

  • CSA CAN/CSA C22.2 No. 0-10
  • CSA CAN/CSA-22.2 No. 60079 0-15
  • CSA CAN/CSA-22.2 No. 60079-11-14
  • CSA CAN/CSA-22.2 No. 1010-1012
  • C22.2 No. 60529:16
  • ANSI/ISA-60079-0 (12.00.01)-2013
  • ANSI/ISA 60079-11 (12.02.01)-2014
  • ANSI/UL 61010-1, 3rd Ed.
  • UL913, 8th Ed.

Ex ia IIB T4 Ga 
Class I, Zone 0, AEx ia IIB T4 Ga 
Class I, Div. 1 Groups C and D T4, IP65

CSA File number  263009
CSA file lookup

Here is a breakdown of the part number IS-DHPX-PP

IS………Intrinsically Safe

-DHPX
D………. drum level
H……… high level alarm
P………. 2 inch NPS threaded plug
X……….. no flowmeter

-PP
PP……..polypropylene pipe + polypropylene float
SS……..stainless steel pipe + stainless steel float
SF……..stainless steel pipe + PTFE float
SB……..stainless steel pipe + BUNA float

Order Here

IS-DHK

No liquid pipe.  Fits in 3/4″ bung

Material pipe/float
IS-DHP-PP

with liquid feed pipe.
$840

Options

Replacement Battery

This is the only battery that may be used with GIZMO I.S. alarms
[BT-IS] $45

Extra cable

Extra cable length over the standard 10ft length. Heavy 0.032″ jacket for superior durability, eight stranded conductors x 24 gage.
[C-8] $0.66/ft

Relay Output

A relay output for signals sent to an approved I.S. barrier. 80mA max.  10ft cable is standard.
[IS-RLY] $54

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